55 results on '"Ching-Sheng Wang"'
Search Results
2. Applying the Shapley Value Method to Predict Mortality in Liver Cancer Based on Explainable AI
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Lun-Ping Hung, Chong-Huai Xu, Ching-Sheng Wang, and Chien-Liang Chen
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- 2023
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3. Effects of augmented reality technology in a mobile touring system on university students’ learning performance and interest
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Kai-Yi Chin, Ya-Chuan Kao, and Ching-Sheng Wang
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Outdoor education ,Multimedia ,Computer science ,05 social sciences ,Control (management) ,Educational technology ,050301 education ,computer.software_genre ,Education ,Cultural heritage ,Augmented reality ,Architecture ,0503 education ,computer ,Cultural competence ,Mobile device - Abstract
In this study, we proposed an augmented reality- (AR-) based mobile touring system for an authentic learning activity, which enables students to observe and learn key information regarding cultural heritage sites. To evaluate the effectiveness of the proposed system, we conducted an experiment in a cultural heritage course at a Taiwanese university. A total of 72 students were divided into two groups and randomly assigned to an experimental group who learned with the AR-based mobile touring system and a control group who learned with a conventional mobile touring system. The experimental results show that the AR-based mobile touring system significantly improved the students’ memorising dimension of learning achievement, as compared with a conventional mobile touring system. Moreover, the positive impact of the proposed system on students’ actualised interest and task-based interest factors provide a particularly encouraging result for outdoor experiences. These experimental results also suggest the potential of AR technology to increase students’ learning interest and improve their learning achievements in outdoor settings. Therefore, we suggest that, when applying an AR-based mobile touring system in authentic learning activities, AR virtual objects should be designed appropriately, in order that the content recall performance and learning interest are enhanced. Implications for practice or policy: Teachers may need to consider using an AR-based mobile touring system for outdoor learning activities. First-year student learning achievements and interest can be improved by an AR-based mobile touring system. First-year student learning performance and interest can be improved by AR technology. The usefulness of AR technology can be proved through a comparison of experimental designs. more...
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- 2020
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4. Fast and Effective Region-based Depth Map Upsampling with Application to Location Map-Free Reversible Data Hiding
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Yu-Ling Tseng, Ching-Sheng Wang, Kuo-Liang Chung, and Tzu-Hsien Chan
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Economics and Econometrics ,Location map ,business.industry ,Computer science ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,Forestry ,Upsampling ,Depth map ,Information hiding ,Materials Chemistry ,Media Technology ,Bicubic interpolation ,Computer vision ,Artificial intelligence ,business ,ComputingMethodologies_COMPUTERGRAPHICS - Abstract
In this paper, we rst propose a fast and eective region-based depth map upsampling method, and then propose a joint upsampling and location map-free reversible data hiding method, simpled called the JUR method. In the proposed upsampling method, all the missing depth pixels are partitioned into three disjoint regions: the homogeneous, semi-homogeneous, and non- homogeneous regions. Then, we propose the depth copying, mean value, and bicubic interpolation approaches to reconstruct the three kinds of missing depth pixels quickly, respectively. In the proposed JUR method, without any location map overhead, using the neighboring ground truth depth pixels of each missing depth pixel, achieving substantial quality, and embedding capacity merits. The comprehensive experiments have been carried out to not only justify the execution-time and quality merits of the upsampled depth maps by our upsampling method relative to the state-of-the-art methods, but also justify the embedding capacity and quality merits of our JUR method when compared with the state-of-the-art methods. more...
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- 2020
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5. Development of a Head-Mounted Mixed Reality Museum Navigation System
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Ching-Sheng Wang, Hao-Lin Chung, and Kai-Yi Chin
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Exhibition ,Gesture recognition ,Human–computer interaction ,Computer science ,Location awareness ,Navigation system ,Augmented reality ,Virtual reality ,computer.software_genre ,computer ,Mobile device ,Mixed reality - Abstract
Many scholars and exhibition halls in recent years have become engaged in the research and development of augmented reality and virtual reality navigation systems. However, most of these navigation systems are still based on handheld mobile devices. Thus, users are likely to experience intermittent visits owing to repeated viewing of the exhibits, the navigation information on the mobile devices, and limited display and interactive functions. Therefore, this study used the Microsoft HoloLens device to implement a head-mounted museum navigation system by integrating such technologies as mixed reality, gesture recognition, and location awareness. This system presents diversified and highly interactive 3D and multimedia navigation information and supports indoor and outdoor location awareness functions to help visitors understand exhibits and exhibition venues, thus further enhancing the display and interaction functions of the mobile navigation system and increasing the pleasure of visiting. more...
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- 2021
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6. Effects of an augmented reality-based mobile system on students’ learning achievements and motivation for a liberal arts course
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Yen-Lin Chen, Ching-Sheng Wang, and Kai-Yi Chin
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050101 languages & linguistics ,Liberal arts education ,media_common.quotation_subject ,Knowledge level ,05 social sciences ,Educational technology ,Self-esteem ,050301 education ,Computer Science Applications ,Education ,Course (navigation) ,Mathematics education ,0501 psychology and cognitive sciences ,Augmented reality ,Student learning ,Psychology ,0503 education ,Mobile device ,media_common - Abstract
Although Augmented Reality (AR) technology has already been adopted into mobile learning environments, additional effort must be put towards providing strong evidence that AR-based mobile s...
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- 2018
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7. An AR mobile navigation system integrating indoor positioning and content recommendation services
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Ching-Sheng Wang
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Mobile navigation ,Computer Networks and Communications ,Hardware and Architecture ,Human–computer interaction ,Computer science ,020204 information systems ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,Augmented reality ,Context (language use) ,02 engineering and technology ,Mobile device ,Software - Abstract
Over the past few years, with the prevalence of smart mobile devices, several well-known museums and researchers have developed mobile navigation systems to improve the navigation effect for museum visitors. However, most of these systems lack efficient content recommendation, indoor positioning, and augmented reality (AR) display functions, and this situation causes difficulty for visitors to have a personalized and efficient navigation experience. This paper presents an augmented reality mobile navigation system that supports indoor positioning and content recommendation services, which aims to provide personalized suggestions corresponding to the user’s context through the analysis of the interest and location information of visitors. Moreover, combined with the developed markerless augmented reality display functions, this system could effectively enrich and improve visitor’s navigation experience. more...
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- 2018
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8. Development of a 3D Virtual Reality Mobile Navigation System for Geopark
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Pin-Yu Chen, Ching-Sheng Wang, and Meng-Lung Lin
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Thesaurus (information retrieval) ,Multimedia ,Mobile navigation ,law ,Geopark ,Navigation system ,Stereoscopy ,Virtual reality ,Stereo display ,computer.software_genre ,computer ,law.invention - Abstract
In recent years, many internationally renowned sightseeing spots and museums have actively developed mobile navigation systems to enhance the navigation effect, but there is still lack of system designed for geopark. Since most of the geology parks have rich geological landscape and topography, the common multimedia navigation system is difficult to present the detailed 3D scenery and appearance, and the navigation effect is limited. Therefore, we take the internationally renowned Yehliu Geopark in Taiwan as an example to develop a virtual reality mobile navigation system that supports multiple 3D display functions. The system can provide various navigation functions such as 3D automatic navigation, free navigation, panoramic image, stereoscopic image, etc., and is supplemented by functions such as tour recommendation and geological knowledge quiz, which can effectively enhance the navigation effect, guide users to learn related geological knowledge, and further enrich the user's navigation experience. more...
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- 2019
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9. An Exploration on the Effect of Augmented Reality Learning System on Situational Interest in Historical Building Guide
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Ya-Chuan Kao, Ching-Sheng Wang, Kai-Yi Chin, and Pin-Yu Chen
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Learning motivation ,Human–computer interaction ,Situational interest ,Perception ,media_common.quotation_subject ,Augmented reality ,Computer aided instruction ,Psychology ,Affect (psychology) ,Learning behavior ,media_common - Abstract
Starting with situational interest, this study explores how students can generate temporary situational interest in the current teaching situation, which may then affect their learning effectiveness, interest changes and learning behavior. As one of the elements for improvement of situational interest is to stimulate sensory perception of the environment, this study proposes a multimedia learning system based on augmented reality technology, observes and evaluates whether application of this system in guide can improve students' situational interest and the effectiveness of improvement in learning motivation and efficiency. In this study, 31 college students were arranged to use the system for guide in six historical sites such as Oxford College in Taiwan. The experimental results showed that the system presented excellent performance in terms of learning effectiveness and enhancing situational interest. more...
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- 2019
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10. Transflective BPIII mode with no internal reflector
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Ching-Sheng Wang, Hui-Yu Chen, Pin-Hung Wu, and Sheng-Feng Lu
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010302 applied physics ,Coupling ,Birefringence ,Materials science ,business.industry ,Phase (waves) ,Reflector (antenna) ,02 engineering and technology ,General Chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Wavelength ,Optics ,Liquid crystal ,0103 physical sciences ,Transmittance ,Reflection (physics) ,Optoelectronics ,General Materials Science ,0210 nano-technology ,business - Abstract
A transflective device without reflector using room temperature blue phase III (BPIII) material is demonstrated in this study. In this device, the coupling of an induced birefringence and field-induced BP, relating the ordered orientation of the double-helix cylinders, causes the reflection and transmission. Compared with other reported transflective liquid crystal devices, the BPIII device shown here does not need any type of internal reflector. Well-matched voltage-dependent transmittance and reflectance curves can be obtained easily without considering the cell gap and incident wavelength. The total response time is less than 2 ms, which is also independent of the cell gap. The experimental results exhibit a simple way to get a transflective device with good ability based on the electro-optical properties of BPIII. more...
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- 2016
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11. Location-Based Hotel Recommendation System
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Ding-Jung Chiang, Chien-Liang Chen, and Ching-Sheng Wang
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Service (business) ,Computer science ,02 engineering and technology ,Recommender system ,Time cost ,Order (business) ,020204 information systems ,Location-based service ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,Marketing ,ComputingMilieux_MISCELLANEOUS ,Hotel industry ,Tourism - Abstract
In recent years, the hotel industry in Taiwan has begun to flourish as the economy has grown. In order to attract more tourists to make changes in various services and facilities, the hotel’s types have begun to make a difference. However, the content of the website is full of personal subjective or unilateral information, which is easy for tourists to lose in it or waste a lot of time cost. Therefore, we hope to provide more comprehensive hotel recommendations and use the traditional recommendation technology combined with location-based services to make recommendations. Different from the conventional recommendation, only comprehensive factors are considered. The study included three individual factors – service, price, facility to do a single rating and combined with the location of the tourist to make recommendations so that the recommendations can be closer to the needs of tourists. We selected 50 high-profile hotels, including five categories of mountain, sea, hot springs, theme parks, and resort hotels. Through the recommendation system, we recommend hotels that have not yet been lived by tourists, as a list of hotels to choose from it. more...
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- 2019
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12. An Efficient Mobile AR Navigation System Using Polygon Approximation Based Data Acquisition
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Wei-Tsung Su and Ching-Sheng Wang
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Computer science ,business.industry ,Real-time computing ,Navigation system ,02 engineering and technology ,Data acquisition ,User experience design ,020204 information systems ,Server ,Polygon ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,Augmented reality ,business ,Mobile device ,Interactive media - Abstract
In recent years, most mobile navigation systems adopt augmented reality (AR) to provide location-aware and interactive multimedia contents for visitors’ reference. Most AR navigation systems support only one target recognition and then only acquire corresponding contents from data servers for reducing storage and network costs. With the increase of multimedia navigation information, the performance of data acquisition for resource-constrained mobile devices must be improved for better user experience. In this paper, we propose not only the multi-target AR recognition mechanism but also the polygon approximation based data acquisition to improve performance of mobile AR navigation system by accelerating spatial data acquisition. In the proposed approach, the query efficiency and search precision can be well controlled according to the requirements of different applications. more...
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- 2019
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13. Effective Content-Aware Chroma Reconstruction Method for Screen Content Images
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Kuo-Liang Chung, Yan-Cheng Liang, and Ching-Sheng Wang
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Pixel ,business.industry ,Computer science ,02 engineering and technology ,Iterative reconstruction ,Computer Graphics and Computer-Aided Design ,Image (mathematics) ,Compensation (engineering) ,0202 electrical engineering, electronic engineering, information engineering ,Bicubic interpolation ,020201 artificial intelligence & image processing ,Computer vision ,Artificial intelligence ,Chroma subsampling ,business ,Image resolution ,Software ,Interpolation - Abstract
In this paper, we propose an effective novel content-aware chroma reconstruction (CACR) method for screen content images (SCIs). After receiving the decoded downsampled YUV image on the client side, our fast chroma-copy approach reconstructs the missing chroma pixels in the flat regions of SCI. Then, for non-flat regions, a non-flat region-based winner-first voting (NRWV) strategy is proposed to identify the chroma subsampling scheme used on the server side prior to compression. Further, an effective adaptive hybrid approach is proposed to reconstruct each missing chroma pixel in the non-flat region by fusing the two reconstructed results, one from our modified NRWV-based chroma subsampling-binding and luma-guided chroma reconstruction scheme, which favors the sharp edges in SCI, as well as the other from the bicubic interpolation scheme, which favors blurred and continuous-tone textures. Further, based on the identified chroma subsampling scheme, a geometry alignment-based error compensation approach is proposed to enhance the reconstructed chroma image. Based on typical test SCIs and JCT-VC screen content videos, comprehensive experiments are carried out in HEVC-16.17 to demonstrate that in terms of quality, visual effect, and quality-bitrate tradeoff of the reconstructed SCIs, our CACR method significantly outperforms the existing state-of-the-art methods. more...
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- 2018
14. Intuitive Projection Display System Supporting the Manipulation of Dual Laser Pens
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Ching-Sheng Wang, Chien-Liang Chen, Ding-Jung Chiang, and Hsin-Chueh Chen
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Computer science ,business.industry ,law ,Projection display ,Computer vision ,Artificial intelligence ,DUAL (cognitive architecture) ,business ,Laser ,law.invention - Published
- 2015
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15. Development of an Intuitive Virtual Navigation System for Mobile Head-Mounted Display
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Tay-Yow Chen and Ching-Sheng Wang
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Virtual tour ,Computer science ,05 social sciences ,Navigation system ,Optical head-mounted display ,020207 software engineering ,02 engineering and technology ,Virtual reality ,Human–computer interaction ,0202 electrical engineering, electronic engineering, information engineering ,0501 psychology and cognitive sciences ,Performance improvement ,Mobile device ,050107 human factors ,Control methods - Abstract
In recent years, with the performance improvement of mobile devices and the increasing popularity of the mobile Head Mounted Display (HMD), more scholars are actively involved in the research of the operation of Mobile VR HMDs. However, most control methods require additional accessory, and the interactive functions are often limited and inefficient. This paper proposes an intuitive virtual navigation system suitable for general mobile HMDs. The system, which requires no additional accessory, completes the analysis and determinations of various navigation commands, as based on the built-in six-axis sensor in mobile smartphones, thus, allowing users to interact intuitively and effectively in the 3D virtual scenes, and improving the control effectiveness and navigation effects of the Mobile VR HMD. more...
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- 2018
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16. An Efficient Three-Dimensional Data Query System to Digital Archive Using API Proxy
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Wei-Cheng Chen, Wei-Tsung Su, Yu-Lin Lin, Siou-Dian Li, and Ching-Sheng Wang
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Information retrieval ,Application programming interface ,Computer science ,Data query ,Location-based service ,Three dimensional data ,Data presentation ,Proxy (climate) ,Spatial computing - Abstract
The data presentation in digital archive is too complicated to understand for general tourists. Although tourists can easily acquire some information from digital archiving systems (DAS) through location-based services (LBS), they are unable to have an in-deep tour without understanding the data represented in three dimensions as time, space and topic. In recent years, spatial computing is proposed to transform the use of DAS from location-aware into location-understanding. Unfortunately, the application programming interface (API) of most DAS is not intuitive and inefficient to query the data stored in DAS. In this paper, we will present a three-dimensional data query system (3DQS) using the proposed API proxy mechanism. The contributions of proposed 3DQS include (1) providing a friendly API to query three-dimensional data in DAS, (2) caching data being requested, and (3) prefetching data according to the time, space, and topic localities predicted from users’ interests. more...
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- 2017
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17. Using Augmented Reality Technology for the Development of Historic Building Teaching Application: A Mackay Culture Course
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Ko-Fong Lee, Chun-Xin Hou, Ching-Sheng Wang, and Kai-Yi Chin
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Structure (mathematical logic) ,Architectural engineering ,Computer science ,business.industry ,Questionnaire ,020206 networking & telecommunications ,02 engineering and technology ,Historic site ,Course (navigation) ,World Wide Web ,Cultural diversity ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,Augmented reality ,Mobile telephony ,business - Abstract
This study proposes a mobile augmented-reality teaching system focused on historic buildings that enables users to build a deeper understanding of the building structure, features, historical references and era influence while simultaneously exploring the historic site through the interaction effect that combines the virtual and the real. This increases overall interest in architecture and history. In this study, five students will operate the AR system to study how Mackay Culture influenced Tamsui and a satisfaction survey with both the questionnaire survey and an interview will be utilized to determine if participants are receptive to our proposed system and provide feedback on how to make subsequent improvements on our model. more...
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- 2017
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18. A markerless augmented reality mobile navigation system with multiple targets display function
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Shih-Hui Hung, Ching-Sheng Wang, and Ding-Jung Chiang
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Engineering ,business.industry ,media_common.quotation_subject ,02 engineering and technology ,Mobile robot navigation ,Image (mathematics) ,Mobile navigation ,020204 information systems ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,Computer vision ,Augmented reality ,Mobile telephony ,Artificial intelligence ,Cluster analysis ,business ,Function (engineering) ,media_common - Abstract
In recent years, more and more internationally famous exhibition sites and scholars have actively engaged in research of mobile navigation system with the function of augmented reality (AR) display. However, most systems can be operated only when a special marker or image is shot at a close distance, and only one target can be recognized and displayed at a time, the function is limited. In particular, such systems cannot work effectively when there are many visitors. In this paper, we presented a mobile navigation system that supports multiple targets markerless AR display function. Based on the k-means clustering algorithm, this system applies markerless image target with high recognition rating as the main basis to complete targets clustering, in order to simultaneously recognize multiple images from long distances, and successfully display corresponding 3D and multimedia navigation information, which can effectively improve the efficiency and practicality of AR mobile navigation system. more...
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- 2017
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19. A Barrier Coverage Mechanism in Wireless Mobile Sensor Networks
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Chao-Tsun Chang, Cheng-Chang Chen, Chih-Yung Chang, and Ching-Sheng Wang
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Health (social science) ,Wi-Fi array ,General Computer Science ,Computer science ,business.industry ,General Mathematics ,General Engineering ,Education ,Mechanism (engineering) ,Key distribution in wireless sensor networks ,General Energy ,Mobile wireless sensor network ,Wireless ,business ,Mobile sensor networks ,General Environmental Science ,Computer network - Published
- 2014
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20. Real-Time Data Delivery Using Prediction Mechanism in Mobile Environments
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Der-Jiunn Deng, Chien-Liang Chen, Ding-Jung Chiang, and Ching-Sheng Wang
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business.industry ,Computer science ,Quality of service ,Distributed computing ,Mobile broadband ,Mobile computing ,Computer Science Applications ,Scheduling (computing) ,Data access ,Bandwidth allocation ,Bandwidth (computing) ,Wireless ,Electrical and Electronic Engineering ,business ,Computer network - Abstract
Mobile data delivery is a critical issue in the mobile computing area. One of the most important problems is the efficient access to data. A proposed solution to this problem is the prefetching technique which consists in putting in reserving the information before the users need it. Low bandwidth, unreliable wireless links, and frequent disconnections of mobile environments make it difficult to satisfy the timing requirements of traditional strategies. This paper investigates broadcast scheduling strategies for push-based broadcast with timing constraints in the form of deadlines ,and proposes a prediction algorithm based on Kalman filter theory for this study. The proposed dissemination policy and adaptive bandwidth allocation scheme obtain sufficient conditions such that all the time-bounded traffic sources satisfy their timing constraints to provide various quality of service guarantees in the broadcast period. Our goal is to identify scheduling algorithms for broadcast systems that ensure requests meeting their deadlines. Our approach examines the performance of traditional real-time strategies and mobile broadcasting strategies, and demonstrates that traditional real-time algorithms do not always perform the best in mobile environments. The proposed design indeed achieves good performance in mobile environments. more...
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- 2014
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21. P2P-based mobile navigation system with location service
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Ching-Sheng Wang, Chien-Liang Chen, and Der-Jiunn Deng
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Multimedia ,Computer Networks and Communications ,Computer science ,Mobile computing ,Mobile Web ,computer.software_genre ,Mobile robot navigation ,Mobile station ,Location-based service ,Mobile database ,Mobile search ,Mobile technology ,computer ,Software - Abstract
With the many practical applications involving global positioning system (GPS) that have been devel- oped to date, location-based services have been receiving increased attention. Mobile users of a mobile navigation system want to retrieve useful or interesting information when they are located in the same area as such points of interest. However, such a system will be overloaded if the number of mobile users increases significantly. Therefore, this study developed a mobile navigation system based on the peer-to-peer (P2P) protocol that supports indoor and outdoor locations. The system enables a mobile user to download multimedia data from nearby users with similar interests. The experiment results show that multimedia data are efficiently transmitted by P2P in the system. more...
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- 2013
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22. Using RFID Positioning Technology to Construct an Automatic Rehabilitation Scheduling Mechanism
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Ching-Sheng Wang, Neil Y. Yen, and Lun-Ping Hung
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Computer science ,Management efficiency ,medicine.medical_treatment ,Process improvement ,Medicine (miscellaneous) ,Quality care ,Health Informatics ,02 engineering and technology ,Efficiency, Organizational ,Rehabilitation Centers ,Health informatics ,Scheduling (computing) ,Health Information Management ,Hardware_GENERAL ,Human–computer interaction ,Patient-Centered Care ,0202 electrical engineering, electronic engineering, information engineering ,medicine ,Humans ,Radio-frequency identification ,Simulation ,Quality of Health Care ,Rehabilitation ,business.industry ,020206 networking & telecommunications ,Positioning technology ,Radio Frequency Identification Device ,020201 artificial intelligence & image processing ,business ,Information Systems - Abstract
Accurately and efficiently identifying the location of patients during the course of rehabilitation is an important issue. Wireless transmission technology can reach this goal. Tracking technologies such as RFID (Radio frequency identification) can support process improvement and improve efficiencies of rehabilitation. There are few published models or methods to solve the problem of positioning and apply this technology in the rehabilitation center. We propose a mechanism to enhance the accuracy of positioning technology and provide information about turns and obstacles on the path; and user-centered services based on location-aware to enhanced quality care in rehabilitation environment. This paper outlines the requirements and the role of RFID in assisting rehabilitation environment. A prototype RFID hospital support tool is established. It is designed to provide assistance for monitoring rehabilitation patients. It can simultaneously calculate the rehabilitant's location and the duration of treatment, and automatically record the rehabilitation course of the rehabilitant, so as to improve the management efficiency of the rehabilitation program. more...
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- 2015
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23. Scheduling Management for Multiple Real-Time Data over On-Demand Mobile Environments
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Ding-Jung Chiang, Ching-Sheng Wang, Chien-Liang Chen, and Wen-Jay Lo
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Independent and identically distributed random variables ,Linear programming ,business.industry ,Computer science ,Quality of service ,Distributed computing ,Real-time computing ,Scheduling (computing) ,Normal distribution ,Wireless ,Real-time data ,business ,Computer Science::Information Theory ,Communication channel - Abstract
Many time-constraint applications operate on continuous queries and need real-time data services in on-demand mobile environments. Providing deadline guarantees for queries over dynamic multiple data is a challenging problem due to continuous query rates and time-varying contents. The accurately approximated optimum distributions is used to obtain analytical expressions for performance metrics such as average real-time miss rate and outage probability. The normal probability distribution function of client request to channel hopping is approximated. In the analysis multiple channel model based on currently transmitting is considered over independent and not identically distributed wireless channels. In addition the performance of currently transmitting is compared with the QoS-based management scheme for real-time query processing. The numerical results are validated by linear programming simulations. It is shown that for broadcasting real-time data placement, this contribution is very useful and efficient for exact performance analysis and design of wireless multi-channel links. more...
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- 2015
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24. Scheduling Analysis of Broadcasting Real-Time Data Based on Prediction Scheme over Wireless Multi-Channels
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Ding-Jung Chiang, Wen-Jay Lo, Ching-Sheng Wang, and Chien-Liang Chen
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business.industry ,Computer science ,Distributed computing ,Mobile computing ,Wireless ,Real-time data ,Mobile telephony ,Kalman filter ,business ,Dissemination ,Mobile service ,Computer network ,Scheduling (computing) - Abstract
With the rapid progress of wireless technology, mobile users can retrieve multiple real-time data with portable devices from mobile service centers. Providing deadline guarantees for queries over mobile environments is a challenging problem due to real-time data arrival rates and time-varying data contents. In this paper, we propose a prediction-based scheme for periodic continuous queries over wireless multi-channels. It is an important issue to effectively disseminate various materials in mobile environments. This paper highlights important problems that have mobile real-time systems from improving the system performance it could be for periodic continuous queries. While current systems aim to foster significant improvements in access latency, this paper argues that most systems are still limited to just being online material without performance concerns. Mobile real-time infrastructure has become a topic for research. A performance-driven model to mobile real-time delivery is proposed in this paper. A novel methodology for deploying periodic continuous queries based on prediction mechanism in mobile environments is presented. We focus on describing the dynamic processing in terms of performance, rather than the details of its implementation. more...
- Published
- 2015
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25. RFID-based and Kinect-based indoor positioning system
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Chien-Liang Chen and Ching-Sheng Wang
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Identification (information) ,Indoor positioning system ,Hardware_GENERAL ,Hybrid positioning system ,business.industry ,Computer science ,Embedded system ,Real-time computing ,Wireless ,ComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMS ,Location systems ,business ,Object (computer science) - Abstract
The research of indoor positioning is rapidly increasing in recent years, and most researchers have focused on RFID technology in indoor positioning; It is difficult to deal with the RFID positioning method, due to RFID is restricted by the disturbance of wireless signals. Therefore, this paper proposes an indoor location system combined with active RFID and Kinect. Based on the identification and positioning functions of RFID, and the effective object extraction ability of Kinect, our system can analyze the identification and position of persons accurately and effectively. more...
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- 2014
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26. A Qualitative Approach to Content-Based Color Image Retrieval with Chinese Captions
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Chuan-Ho Kao, Ching-Sheng Wang, Timothy K. Shih, Anthony Y. Chang, and Huan-Chao Keh
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Color image ,Computer science ,business.industry ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,Image processing ,Content-based image retrieval ,Automatic image annotation ,Image texture ,Feature (computer vision) ,Computer vision ,Visual Word ,Artificial intelligence ,business ,Image retrieval - Abstract
This paper presents an intelligent method of retrieving images with Chinese captions from an image database. We combine color, shape and spatial features of the image to index and measure the similarity of images. As a technical contribution, a Seed-Filling like algorithm that could extract the shape and spatial relationship feature of images is proposed. Due to the difficulty of determining how far objects separate, we use qualitative spatial relations to analyze object similarities. Also, the system is incorporated with a visual interface and a set of tools, which allows the users to express the query by specifying or sketching the images conveniently. Besides, our feedback learning mechanism enhances the precision of retrieval. Our experience shows that the system is able to retrieve image information efficiently by the proposed approaches. more...
- Published
- 2000
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27. Building a Smooth Medical Service for Operating Room Using RFID Technologies
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Ding Jung Chiang, Lun-Ping Hung, Hsin Ke Lu, and Ching-Sheng Wang
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Service (systems architecture) ,Article Subject ,business.industry ,Process (engineering) ,Computer science ,Applied Mathematics ,lcsh:Mathematics ,Information technology ,Tracing ,lcsh:QA1-939 ,Work (electrical) ,Risk analysis (engineering) ,Health care ,Preprocessor ,Radio-frequency identification ,business - Abstract
Due to the information technology advancement, the feasibility for the establishment of mobile medical environments has been strengthened. Using RFID to facilitate the tracing of patients’ mobile position in hospital has attracted more attentions from researchers due to the demand on advanced features. Traditionally, the management of surgical treatment is generally manually operated and there is no consistent operating procedure for patients transferring among wards, surgery waiting rooms, operating rooms, and recovery rooms, resulting in panicky and urgent transferring work among departments and, thus, leading to delays and errors. In this paper, we propose a new framework using radio frequency identification (RFID) technology for a mobilized surgical process monitoring system. Through the active tag, an application management system used before, during, and after the surgical processes has been proposed. The concept of signal level matrix, SLM, was proposed to accurately identify patients and dynamically track patients’ location. By updating patient’s information real-time, the preprocessing time needed for various tasks and incomplete transfers among departments can be reduced, the medical resources can be effectively used, unnecessary medical disputes can be reduced, and more comprehensive health care environment can be provided. The feasibility and effectiveness of our proposed system are demonstrated with a number of experimental results. more...
- Published
- 2014
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28. Unified Performance Analysis of Multihop Wireless Communication Link over Multi-channels
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Ching-Sheng Wang, Chien-Liang Chen, and Ding-Jung Chiang
- Subjects
Scheme (programming language) ,business.industry ,Computer science ,Mobile computing ,Response time ,Link (geometry) ,Popularity ,Wireless ,Data delivery ,business ,Data objects ,computer ,Computer network ,computer.programming_language - Abstract
With the rapid increasing of wireless request, user mobility is a critical influence on system performance of mobile environments. Unlike conventional distributed systems, the mobility of users is the major characteristic in a mobile computing environment so that the value of data may depend on location, and processing of a query at one site may give different results than that at another. In this paper, we present the broadcast-based location dependent data delivery scheme for location-based queries. In the approach, broadcasted data objects are dynamically adjusted based on their locations, and the server broadcasts the location dependent data along with access popularity. Then, we present a data evaluation scheme, designed to reduce the query response time. Simulation experiments are conducted to compare the performance of our method with other issues. The results show that our schemes outperform the conventional strategies. more...
- Published
- 2014
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29. Intuitional 3D Museum Navigation System Using Kinect
- Author
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Ching-Sheng Wang, Ding-Jung Chiang, and Yu-Chia Wei
- Subjects
Computer science ,Computer graphics (images) ,media_common.quotation_subject ,Control (management) ,Interactive 3d ,Navigation system ,Voice command device ,Virtual reality ,Function (engineering) ,media_common - Abstract
Most of the museum navigation systems lack the function of user interaction. Even the small number of systems with user interaction functions, but required special and expensive devices, or may use non-intuitional operation methods. This paper used popular and economic Microsoft Kinect devices to establish an interactive 3D museum navigation system that supports intuitional commands. The users are allowed to intuitively control the 3D navigation system by physical motions and voice commands without wearing any additional appliances. The experiments show that the proposed system improves the effect of navigation satisfactorily. more...
- Published
- 2013
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- View/download PDF
30. A location-aware mobile navigation system integrating recommendation mechanism
- Author
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Yu-Chia Wei, Chien-Liang Chen, Ching-Sheng Wang, and Wei-Chieh Hsu
- Subjects
World Wide Web ,Mobile navigation ,Computer science ,Mechanism (biology) ,Visitor pattern ,Location aware ,Mobile computing ,Turn-by-turn navigation ,Recommender system ,Mobile robot navigation - Abstract
Most existing museum digital navigation systems either lack a visitor recommendation mechanism or only have recommended navigation routes that lack any consideration of the needs and interests of individual users. Therefore, the navigation routes and timeframes are often inflexible, and such systems cannot recommend suitable exhibits and tour routes according to the users' backgrounds and needs. This paper proposed a location-aware mobile navigation system that integrates recommendation mechanism based on the localization information. In addition to providing clear navigation suggestions according to the needs of the user, the system could analyze the location and time of the users and attempt to determine the potential interests of the users before actively recommending suitable navigation routes and timeframes through the use of hybrid filtering, thus realizing personalized and diversified navigation. more...
- Published
- 2012
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31. A real-time therapy course tracking system for rehabilitants
- Author
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Wen-Bin Yu, Ching-Sheng Wang, and Lun-Ping Hung
- Subjects
Rehabilitation ,Software_GENERAL ,Hardware_GENERAL ,Computer science ,business.industry ,medicine.medical_treatment ,medicine ,Tracking system ,Operations management ,Duration (project management) ,business ,Course (navigation) - Abstract
Along with the improvement of medical technologies, the demand for rehabilitation therapy is increasing. However, paper-based methods are still used in most rehabilitation therapy rooms to record patient data, which is very inconvenient. In addition, since the rehabilitation therapy records and schedules in the therapy rooms are created manually, human errors and equipments being left idle are inevitable. If the rehabilitation therapy procedure could be recorded in an automatic manner, the errors caused by manual operations could be reduced and the situation of resources being left idle could be avoided. Therefore, this paper proposed an automatic real-time localization and therapy course tracking system for rehabilitants. The system adopted the active RFID localization technology. It could simultaneously calculate the rehabilitant's location and the duration of treatment, and automatically record the rehabilitation course of the rehabilitant, so as to improve the management efficiency of the rehabilitation therapy course. more...
- Published
- 2012
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- View/download PDF
32. 3D augmented reality mobile navigation system supporting indoor positioning function
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Yi-Yun Ho, Ching-Sheng Wang, and Ding-Jung Chiang
- Subjects
Exhibition ,Class (computer programming) ,Multimedia ,Computer science ,media_common.quotation_subject ,Mobile computing ,Augmented reality ,computer.software_genre ,Function (engineering) ,computer ,Mobile device ,Mobile robot navigation ,media_common - Abstract
“Oxford College,” well-known as “the earliest edification institution in northern Taiwan,” was planned by Rev. George Leslie Mackay. It is a typical Chinese and Western style architecture with rich historical and cultural content, now is a Class 2 national monument. This paper took “Oxford College” as an example to develop a 3D augmented reality mobile navigation system that supports the function of indoor positioning. This system collected the historical data to develop the 3D models according to the ratio of actual objectives, and constructed the 3D external and internal structures of Oxford College of the past and present. Moreover, this system combined RFID positioning function with the technology of markerless augmented reality to actively detect the location of visitors and to further instantaneously present 3D and multimedia navigation information on mobile devices. more...
- Published
- 2012
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- View/download PDF
33. Location-Based P2P Mobile Navigation System
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Wei-Dun Chen, Chien-Liang Chen, and Ching-Sheng Wang
- Subjects
Multimedia ,Computer science ,business.industry ,Real-time computing ,Mobile computing ,computer.software_genre ,Mobile robot navigation ,Mode (computer interface) ,Global Positioning System ,Turn-by-turn navigation ,Area navigation ,business ,Cluster analysis ,computer ,Data transmission - Abstract
In recent years, location-based services have received increased attention, with many developed practical applications for GPS, such as traffic navigation, travel guides, album maps, etc. This study developed a P2P mobile navigation system that supports both indoor and outdoor positioning. When a user walks indoor or outdoor exhibition areas with mobile navigation equipment, this system can indicate the position of the user, and the location-based P2P clustering mechanism enables the user to download relevant 3D scenes and multimedia information in P2P mode from nearby peers with the same navigation interest, thus, navigation data transmission efficiency is effectively increased. more...
- Published
- 2011
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- View/download PDF
34. Flexible Localization and Identification System Based on RFID and Vision Tracking Technologies
- Author
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Chun-Chih Chen and Ching-Sheng Wang
- Subjects
Identification (information) ,Signal strength ,business.industry ,Computer science ,Real-time computing ,Eye tracking ,Tracking system ,Computer vision ,Artificial intelligence ,business ,Video image ,Identification system - Abstract
Among existing indoor localization systems, considering the costs and accuracy, RFID has been one of the best choices for indoor positioning. However, years of research experiences found that the signal strength of RFID is not sufficiently stable and sensitive to the indoor environment and furniture, which reduce positioning accuracy. Therefore, this paper proposed an indoor localization and identification system, bases on active RFID and vision tracking technologies. This system has a more flexible RFID triangular layout method and a more efficient sensing overlap analysis mechanism. By integrating the precise positioning information of video images, the proposed system not only reduces the costs, but also improves the computing efficiency and positioning accuracy. more...
- Published
- 2011
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- View/download PDF
35. An Efficient Content-Based Retrieval System for Large Image Database
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Timothy K. Shih and Ching-Sheng Wang
- Subjects
Spatial relation ,Automatic image annotation ,Information retrieval ,Image database ,Computer science ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,Visual Word ,Cluster analysis ,Content-based image retrieval ,Image retrieval ,Content based retrieval - Abstract
Content-based image retrieval has become more desirable for developing large image databases. This chapter presents an efficient method of retrieving images from an image database. This system combines color, shape and spatial features to index and measure the similarity of images. Several color spaces that are widely used in computer graphics are discussed and compared for color clustering. In addition, this chapter proposes a new automatic indexing scheme of image databases according to our clustering method and color sensation, which could be used to retrieve images efficiently. As a technical contribution, a Seed-Filling like algorithm that could extract the shape and spatial relationship feature of an image is proposed. Due to the difficulty of determining how far objects are separated, this system uses qualitative spatial relations to analyze object similarity. Also, the system is incorporated with a visual interface and a set of tools, which allows the users to express the query by specifying or sketching the images conveniently. The feedback learning mechanism enhances the precision of retrieval. The experience shows that the system is able to retrieve image information efficiently by the proposed approaches. more...
- Published
- 2011
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- View/download PDF
36. RFID & vision based indoor positioning and identification system
- Author
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Ching-Sheng Wang and Li-Chieh Cheng
- Subjects
Positioning system ,Vision based ,Computer science ,Hybrid positioning system ,business.industry ,Real-time computing ,Cognitive neuroscience of visual object recognition ,Video image ,Identification system ,Identification (information) ,Global Positioning System ,ComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMS ,Computer vision ,Artificial intelligence ,business - Abstract
RFID is the best choice for indoor positioning as it attaches equal importance to both accuracy and cost; however, with the limited strength stability of RFID signals, coupled with interferences of indoor environments and furniture, the positioning system based on RFID only is subject to bottlenecks, which are difficult to break through for positioning accuracy. Therefore, this paper presents an RV-based indoor positioning and identification system which integrating RFID and vision techniques, via cross reference of video images, RFID positioning, and ID information, improves the accuracy of personnel positioning and possesses the function of personnel identification. more...
- Published
- 2011
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37. Adaptive Rfid Positioning System Using Signal Level Matrix
- Author
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Ching-Sheng Wang, Xin-Mao Huang, and Hung, Ming-Yu
- Subjects
location-aware ,indoor ,localization ,RFID positioning - Abstract
In this paper, we present a method named Signal Level Matrix (SLM) which can improve the accuracy and stability of active RFID indoor positioning system. Considering the accuracy and cost, we use uniform distribution mode to set up and separate the overlapped signal covering areas, in order to achieve preliminary location setting. Then, based on the proposed SLM concept and the characteristic of the signal strength value that attenuates as the distance increases, this system cross-examines the distribution of adjacent signals to locate the users more accurately. The experimental results indicate that the adaptive positioning method proposed in this paper could improve the accuracy and stability of the positioning system effectively and satisfyingly., {"references":["Jeffrey Hightower and Gaetano Borriello, \" SpotON: An Indoor 3D\nLocation Sensing Technology Based on RF Signal Strength\" ,\nProceedings of the UW CSE Technical Report, #2000-02-02, February\n18, 2000, pp.1- 16.","Ni, L.M., Liu, Y. and Patil, A.P. (2003) \" LANDMARC: indoor\nlocation sensing using active RFID\" , Proceedings of the First IEEE\nInternational Conference on Pervasive Computing and\nCommunications (PerCom- 03), Fort Worth, Texas, pp.407- 415.","Yiyang Zhao, Yunhao Liu, and Lionel M. Ni, \" VIRE: Active\nRFID-based Localization Using Virtual Reference Elimination\" ,\nProceedings of the 2007 International Conference on Parallel\nProcessing, IEEE Computer Society, XiAn, China, September, pp.\n10-14.","P. Krishnan, A.S. Krishnakumar, W.H. Ju, C. Mallows, and S. Ganu,\n\" A System for LEASE: Location Estimation Assisted by Stationary\nEmitters for Indoor RF Wireless Networks\" , Proceedings of IEEE\nINFOCOM 2004, Mar. 2004, pp. 1001-1011.","Jin, G-Y., Lu, X-Y. and Park, M-S. (2006) \" An indoor localization\nmechanism using active RFID tag\" , Proceedings of the IEEE\nInternational Conference on Sensor Networks, Ubiquitous, and\nTrustworthy Computing (SUTC- 06), Taichung, Taiwan ,Vol. 1,\npp.40- 43.","Shih, S-T., Hsieh, K. and Chen, P-Y. (2006) \" An improvement\napproach of indoor location sensing using active RFID\" , Proceedings\nof the First International Conference on Innovative Computing,\nInformation and Control (ICICIC- 06), Vol. 2, pp.453- 456.","Chih-Chao Yang, \" A RFID-Based Location Sensing Mechanism\" ,\nInstitute of Information Management, National Chiao Tung University,\nThesis, June 2005.","Zong-Wei Jian, \" Indoor Positioning Algorithm for RFID System\" ,\nDepartment of Electrical Engineering and Computer Science, National\nTaiwan Ocean University, Thesis, June 2005.","Xuejing Jiang,Ye Liu, Xiaolei Wang ,\" Ehanced Approach of Indoor\nLocation Sensing Using Active RFID\" , Proceedings of DOI\n10.1109/ICIE. vol. 1, pp.169-172.\n[10] Huang Yihua, Lv Shilei, Liu Zongyuan, Jun Wang, Jun Shi ,\" The\nTopology Analysis of Reference Tags of RFID Indoor Location\nSystem\" , Proceedings of the 2009 3rd IEEE International Conference\non Digital Ecosystems and Technologies Turkey, 1- 3 June,\npp.313- 317.\n[11] Chai-Hao ChangÒÇüWei-Cheng Lin , \" The Research of Active RFID\nwith Ultrasound for Positioning and Path Planning\" , I-SHOU\nUniversity M.S. Thesis , 2009.\n[12] Ching-Sheng Wang, Chun-Hong Huang, Yong-Si Chen, and Li-Jie\nZheng,\" An Implementation of Positioning System in Indoor\nEnvironment based on Active RFID\" , The Second IEEE International\nConference on Ubi-media Computing, Taipei, Taiwan, Dec. 2009., pp.\n1-6.\n[13] César Benavente-Peces, V├¡ctor Manuel Moracho-Oliva, Alfonso\nDom├¡nguez-Garc├¡a,Manuel Lugilde-Rodr├¡guez, \" Global System for\nLocation and Guidance of Disabled People: indoor and outdoor\ntechnologies integration: indoor and outdoor technologies\nintegration\" , Proceedings of the IEEE 802.11p1609 Networks,\npp.370 - 375.\n[14] Kun-Ming Yu, Ming-Gong Lee, Chien-Tung Liao, Hung-Jui Lin, \"\nDesign and Implementation of a RFID Based Real-Time\nLocation-aware System in Clean Room\" , Proceedings of the 2009\nIEEEDOI 10.1109/ISPA pp.382 - 388."]} more...
- Published
- 2010
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38. A Laser Point Interaction System Integrating Mouse Functions
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Ching-Sheng Wang, Lun-Ping Hung, Peng, Sheng-Yu, and Li-Chieh Cheng
- Abstract
The computer has become an essential tool in modern life, and the combined use of a computer with a projector is very common in teaching and presentations. However, as typical computer operating devices involve a mouse or keyboard, when making presentations, users often need to stay near the computer to execute functions such as changing pages, writing, and drawing, thus, making the operation time-consuming, and reducing interactions with the audience. This paper proposes a laser pointer interaction system able to simulate mouse functions in order that users need not remain near the computer, but can directly use laser pointer operations from at a distance. It can effectively reduce the users- time spent by the computer, allowing for greater interactions with the audience. more...
- Published
- 2010
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39. A location and interest based peer to peer virtual navigation system
- Author
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Ching-Sheng Wang and Ching-Yang Hong
- Subjects
Multimedia ,Computer science ,Download ,Server ,Turn-by-turn navigation ,Bandwidth (computing) ,Navigation system ,Virtual reality ,Peer-to-peer ,computer.software_genre ,computer ,Mobile robot navigation - Abstract
The increasingly amount of virtual scenes and multimedia data have been the major problems in developing a virtual navigation system. Designers of virtual navigation system need to consider whether the massive data would influence the smoothness of navigation to users, and whether the efficiency of server would be decreased sharply when multiple users are online at the same time. In order to solve this problem, most of existing systems increase the number of servers or the network bandwidth, but the construction cost is also increased as a result. This paper designed a peer to peer (P2P) virtual navigation system with positioning function, this system is based on location and interest of users, so that when users carry mobile equipments such as notebook computer, UMPC, Mini notebook,…etc., walking around the actual scenes of indoor and outdoor areas of campus, users can peer-to-peer download/share virtual scenes and multimedia data from surrounding users or the users have the same navigation interest. Therefore, the transmission efficiency of navigation system would be improved obviously. more...
- Published
- 2009
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- View/download PDF
40. An adaptive RFID localization mechanism supporting 3D virtual tour system
- Author
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Ching-Sheng Wang and Shyh-Shyan Wu
- Subjects
Class (computer programming) ,Virtual tour ,Ubiquitous computing ,Multimedia ,Computer science ,media_common.quotation_subject ,Virtual reality ,computer.software_genre ,Mechanism (engineering) ,Exhibition ,Promotion (rank) ,Human–computer interaction ,Mobile device ,computer ,media_common - Abstract
With the promotion of ubiquitous computing, it is the interesting research to integrate RFID technology with virtual reality. In this paper, we take the Class 2 national monument, the first educational institute in northern Taiwan - Tamsui Oxford College (Mackay Museum) as the example, to develop a 3D virtual tour system that supports RFID localization. This paper proposes the new adaptive RFID positioning mechanisms combing the virtual tour system, when user carries notebook or mobile device walking in the true scene, the system can update user's position in the virtual scene immediately. In addition, when user moves around the special historical objects, system can further trigger the special show incident which reminds the user and let user experiences the special history relic and incident deeply. more...
- Published
- 2008
- Full Text
- View/download PDF
41. A 3D Virtual Navigation System Integrating User Positioning and Pre-Download Mechanism
- Author
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Ching-Sheng Wang, Yu-Hung Su, and Ching-Yang Hong
- Subjects
RFID ,GPS ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,Voronoi Diagram ,Positioning ,Virtual Navigation - Abstract
This paper takes the actual scene of Aletheia University campus – the Class 2 national monument, the first educational institute in northern Taiwan as an example, to present a 3D virtual navigation system which supports user positioning and pre-download mechanism. The proposed system was designed based on the principle of Voronoi Diagra) to divide the virtual scenes and its multimedia information, which combining outdoor GPS positioning and the indoor RFID location detecting function. When users carry mobile equipments such as notebook computer, UMPC, EeePC...etc., walking around the actual scenes of indoor and outdoor areas of campus, this system can automatically detect the moving path of users and pre-download the needed data so that users will have a smooth and seamless navigation without waiting., {"references":["Yan-Ning Xu, Lu Wang, Xiao-Ting Wang, Cheng-Lei Yang, Xiang-Xu\nMeng \"Cooperative Design and Data Management of Virtual Museum\nBased on Voronoi Diagram\" Proceedings of the Ninth International\nConference on Computer Supported Cooperative Work in Design, 2005.","Tetsuro Ogi and Tetsuro Fujise \"Communication between Outdoor Field\nand Immersive Virtual Environment\" Proceedings of the 20th\nInternational Conference on Advanced Information Networking and\nApplications (AINA-06).","Shohei Koide, Student Member, and Masami Kato,\"3-D Human\nNavigation System with Consideration of Neighboring Space\nInformation\" Proceedings of IEEE International Conference on Systems,\nMan, and Cybernetics, October 8-11, 2006, Taipei, Taiwan.","Fan Zhang and Hanqiu Sun´╝î\" Dynamic Labeling Management in\nVirtual and Augmented Environments\" Proceedings of the Ninth\nInternational Conference on Computer Aided Design and Computer\nGraphics (CAD/CG 2005).","Andreas Schmeil, Wolfgang Broll´╝î\" MARA-A Mobile Augmented\nReality-Based Virtual Assistant\" Proceedings of the IEEE Virtual\nReality Conference 2007 March 10 - 14, Charlotte, North Carolina,\nUSA.","Nazrita Ibrahim and Nurul Fazmidar Mohd Noor \"Navigation\nTechnique in 3D Information Visualisation\", Proceedings of the\nTENCON 2004. 2004 IEEE Region 10 Conference","K.W. Chiang, \"National Geographic Information\nSystem\",http://ngis.moi.gov.tw/TheFiles/journal/56/index.htm, pp.22-33,\n2005","Jeffrey Hightower, Gaetano Borriello, \"SpotON:An Indoor 3D Location\nSensing Technology Based on RF Signal Strength\", Proceedings of UW\nCSE Technical Report, #2000-02-02, February 18, 2000.","L. M. Ni, Y. Liu and A. P. Patil, \"LANDMARC: Indoor Location\nSensing Using Active RFID\", Proceedings of the First IEEE\nInternational Conference on Pervasive Computing and Communications\n(PerCom'03), pp. 407-415, 2003.\n[10] Guang-yao Jin, Xiao-yi Lu, Myong-Soon Park \" An Indoor Localization\nMechanism Using Active RFID Tag\", Proceedings of the IEEE\nInternational Conference on Sensor Networks, Ubiquitous, and\nTrustworthy Computing (SUTC-06), 2006.\n[11] Sung-Tsun shih, Kunta Hsieh and, Pei-Yuan chen\" An Improvement\nApproach of Indoor Location Sensing Using Active RFID\" Proceedings\nof the First International Conference on Innovative Computing,\nInformation and Control (ICICIC'06), 2006.\n[12] Chong-Yi Li, \"The Implementation of an Indoor Geolocation System\",\nDepartment of Computer Science and Information Engineering, National\nCentral University, Thesis, July 2005.\n[13] Chih-Chao Yang, \"A RFID-Based Location Sensing Mechanism\",\nInstitute of Information Management, National Chiao Tung University,\nThesis, June 2005\n[14] Zong-Wei Jian,\" Indoor Positioning Algorithm for RFID System\",\nDepartment of Electrical Engineering and Computer Science, National\nTaiwan Ocean University, Thesis, June 2005."]} more...
- Published
- 2008
- Full Text
- View/download PDF
42. IMIS 2008 - Message from the Workshop Organizers
- Author
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Pedro M. Ruiz, Seong Moo Yoo, Whai-En Chen, Howard Leung, Hyobeom Ahn, Pilar Herrero, David Simplot-Ryl, Frode Eika Sandnes, Tatsuya Yamazaki, Jong Hyuk Park, Qun Jin, Yin Fu Huang, Junmo Yang, Witold Pedrycz, Hyun-Ju Kim, Bonam Kim, Shu-Ching Chen, Mohammad Al-Shurman, Kuei Ping Shih, Kouichi Sakurai, Javier Lopez, Isabelle Simplot-Ryl, Q. Shi, Mei-Ling Shyu, Ching Sheng Wang, Ilsun You, Indrakshi Ray, Hai Jin, Edwin H.-M. Sha, Chunming Rong, Wen Tzeng Huang, Sang H. Son, Xiaofeng Chen, Ismail Khalil Ibrahim, Jemal H. Abawajy, Oh Heum Kwon, Seungjin Park, Jinhua Guo, Chengcui Zhang, Ching-Hsien Hsu, Minyi Guo, Geyong Min, Hui-Huang Hsu, Javier García-Villalba, Lawrence Y. Deng, Jon Youn, and Akiyo Nadamoto more...
- Subjects
World Wide Web ,Ubiquitous computing ,Multimedia ,Computer science ,business.industry ,media_common.quotation_subject ,Quality (business) ,computer.software_genre ,business ,computer ,Interactive media ,media_common - Abstract
Welcome to Pusan and the second International Workshop on Interactive Multimedia and Intelligent Services in Mobile and Ubiquitous computing (IMIS08)! We are very pleased that the workshop continues to attract high quality submissions from a diverse and international group of researchers. With the proliferation of wireless technologies and electronic devices, there is a fast growing interest in Mobile and Ubiquitous Computing (MUC). MUC enables to create a human-oriented computing environment where computer chips are embedded in everyday objects and interact with physical world. This workshop focuses on the challenges and solutions for MUC with an emphasis on interactive multimedia and intelligent services. The workshop provides an opportunity for academic and industry professionals to discuss the latest issues and progress in the area of MUC. Most of submitted papers this year received three peer reviews from our program committee, comprising 32 members from academia and industry. It is impossible to organize such a successful program without the help of many individuals. We would like to express our appreciation to the authors of the submitted papers, and to the program committee members, who provided timely and significant reviews. We hope all of you enjoy IMIS08 and find this a productive opportunity to learn, exchange idea, make new contacts and renew old ones. May your visit also include some time to enjoy the charming city of Pusan. more...
- Published
- 2008
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- View/download PDF
43. The Development of the Adaptive Traffic Signal Control System
- Author
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Chin-Thin Wang, L.Y. Deng, Hsu Chun Liang, Ching-Sheng Wang, and Lun-Ping Hung
- Subjects
InSync adaptive traffic control system ,Adaptive control ,Computer science ,Control system ,Real-time computing ,Traffic flow ,Intelligent transportation system ,Heterogeneous network ,Advanced Traffic Management System ,Object detection - Abstract
Agents refer to self-contained and identifiable computer programs that can migrate along the network and can act on behalf of the user or other agents. Agents often work on heterogeneous network and operating system environment. Therefore, an integrated logical process to access physical structure via agent application is become more and more urgent. The adaptive urban traffic signal control (TSC) system has become a development trend of intelligent transportation system (ITS). In this paper, we proposed a tracking and persistent agent-based mobility management system in case of adaptive urban traffic signal control (TSC) system. We investigated the vision based surveillance and to keep sight of the unpredictable and hardly measurable disturbances may perturb the traffic flow. We integrated and performed the vision based methodologies that include the object segmentation, classify and tracking methodologies to know well the real time measurements in urban road. According to the real time traffic measurement, we derived agent communication and the adaptive traffic signal control strategy to adapt the traffic signal time. By comparing the experimental result obtained by traditional traffic signal control system which improves the traffic queuing situation, we confirmed the efficiency of our vision based adaptive TSC approach. more...
- Published
- 2006
- Full Text
- View/download PDF
44. AN EFFICIENT CONTENT-BASED RETRIEVAL SYSTEM FOR 3D OBJECTS
- Author
-
Ching-Sheng Wang
- Subjects
Parsing ,Similarity (geometry) ,business.industry ,Computer science ,Normalization (image processing) ,computer.file_format ,Object (computer science) ,File format ,computer.software_genre ,Computer Graphics and Computer-Aided Design ,Computer Science Applications ,Hardware and Architecture ,VRML ,Computer graphics (images) ,The Internet ,business ,computer ,Software ,ComputingMethodologies_COMPUTERGRAPHICS ,Graphical user interface - Abstract
VRML is rapidly becoming the standard file format for delivering 3D content via the Internet. Most 2D and even 3D content-based retrieval techniques are designed based on 2-D information such as shape or texture comparisons. In this paper, we present a novel similarity method based on 3D information extracted from the VRML object database. Users may give a VRML object and find VRML scenes that use the similar object via our retrieval system. The system includes multiple subsystems, which are conducted in two main parts. The first part includes the VRML object parser system and the normalization system. The second part includes the comparison system, database management system, and a friendly graphical user interface, which improves the interaction and retrieval precision. Experience shows that the system can retrieve 3D objects from VRML databases with high satisfaction. more...
- Published
- 2006
- Full Text
- View/download PDF
45. Applying Word Sense Disambiguation to Question Answering System for e-Learning
- Author
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Che-Yu Yang, George Yee, Ching-Sheng Wang, Jason C. Hung, and Mao-Shuen Chiu
- Subjects
Word-sense disambiguation ,Knowledge management ,business.industry ,Computer science ,E-learning (theory) ,Distance education ,Knowledge engineering ,WordNet ,Word sense ,Information science ,Knowledge base ,ComputingMilieux_COMPUTERSANDEDUCATION ,Question answering ,Mathematics education ,The Internet ,business ,Natural language - Abstract
Interaction between the student and the instructor is important for the student to gain knowledge. Also, one of the major tasks on the instructor in e-learning is to reply student e-mails and posted messages. Students usually raise their questions by these two methods in an e-learning environment. In this paper, we introduce a semantic-based automated question answering system that can act like a virtual teacher to respond to student questions online. With the system, not only the instructor can be relieved from the load of answering lots of questions, but also the student can mostly get answers promptly without waiting for the instructor to get online and provide an answer. This would be a big help for both the instructor and the student in e-learning environment. Through the process of raising questions and getting answers, the knowledge base will be enriched for future questions answering. Further, not only the students can get answers for their questions, but also the instructors could know what problems students encounter in learning. These would be big aids to both the teaching and the learning. more...
- Published
- 2005
- Full Text
- View/download PDF
46. On automatic actions retrieval of martial arts
- Author
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Ching-Sheng Wang, Timothy K. Shih, Yi-Tsou Hsin, Yuan-Kai Chiu, and Chun-Hong Huang
- Subjects
Martial arts ,Computer science ,business.industry ,Animation ,computer.file_format ,Virtual reality ,Motion (physics) ,Feature (computer vision) ,VRML ,Video tracking ,Computer vision ,Artificial intelligence ,business ,computer ,Computer animation - Abstract
Martial art actions can be represented via VRML animations or extracted by video tracking. We propose an action retrieval method, which allows users to retrieve similar martial art actions. The mechanism is based on a similarity function that compares animation tracks. A representation of the human skeleton includes head, knee, elbow, wrist, etc and further aggregates important features in martial art actions. Different weights are dynamically calculated according to motion sensitivity of feature points. As a result, the system can automatically retrieve similar martial art actions. The results are tested by a professional kung fu master with good satisfaction. more...
- Published
- 2005
- Full Text
- View/download PDF
47. Course on-demand modular tool for designing distance learning courses
- Author
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Ling-Min Wang, Lun-Ping Hung, Chia-Ling Ho, and Ching-Sheng Wang
- Subjects
Cooperative learning ,Independent study ,Proactive learning ,Multimedia ,Computer science ,Teaching method ,Distance education ,Educational technology ,computer.software_genre ,Robot learning ,Experiential learning ,Information science ,Synchronous learning ,Active learning ,ComputingMilieux_COMPUTERSANDEDUCATION ,Student learning ,computer - Abstract
Due to the benefit provided by the well-developed infrastructure of the Internet, a growing number of people wish to enroll onto distance learning courses. However, the development of distance learning still faces many challenges, especially in the field of providing appropriate and user-friendly course design tools for the instructor, measuring student learning performance. Moreover, it is hard for an instructor to discern a student's personal needs, such as knowledge level, learning ability, and learning needs. Besides, instructors are required to post all teaching material on the Internet before class starts which may result in the preparation of class material without considering student learning ability. This leads to a slower development of distance learning. We provide a systematic course design tool which is based on the quantitative analysis mechanism we proposed to construct a multidimension and multiadaptive course learning object-oriented model. Furthermore, combining the resource-sharing character of PHP, a course on-demand mechanism can be developed which allows the instructor to provide a different combination of courses for different learning programs. more...
- Published
- 2004
- Full Text
- View/download PDF
48. Efficient indexing and retrieval scheme for VRML database
- Author
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Lun-Ping Hung, Chun-Hong Huang, Ching-Sheng Wang, and Jia-Fu Chen
- Subjects
Information retrieval ,Database ,Computer science ,Search engine indexing ,computer.file_format ,computer.software_genre ,Object (computer science) ,Database index ,Automatic indexing ,VRML ,Web page ,ComputingMethodologies_DOCUMENTANDTEXTPROCESSING ,User interface ,computer ,Image retrieval ,ComputingMethodologies_COMPUTERGRAPHICS - Abstract
VRML (Virtual Reality Modeling Language) is used to model the 3D object of the Web page, and become as a standard for 3D information of World Wide Web. We propose a content-based VRML 3D object retrieval system. The system can display 3D objects queries to Web browsers interactively. User may give a VRML object, and find VRML scenes that use the similar object via user interface. In this system, we propose the automatic indexing scheme of VRML database according to our Oct-tree representation method, which could filter the VRML object efficiently. Our experience shows that the system is able to retrieve 3D objects from VRML scenes satisfyingly by the proposed approaches. more...
- Published
- 2004
- Full Text
- View/download PDF
49. Content-based information retrieval for VRML 3D objects
- Author
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Timothy K. Shih, Chun-Hung Huang, Jia-Fu Chen, and Ching-Sheng Wang
- Subjects
Information retrieval ,Computer science ,business.industry ,Feature extraction ,computer.file_format ,Virtual reality ,Object (computer science) ,VRML ,Web page ,Web design ,business ,Image retrieval ,computer ,Graphical user interface - Abstract
Because of the interest of 3D images and the popularity of World Wide Web, the number of 3D scene/objects and model database throughout the world is growing both in number and in size. VRML (Virtual Reality Modeling Language) is used to model the 3D object of the Web page, and become as a standard for 3D information. Most content-based retrieval (CBR) techniques such as shape and color comparison among objects are for image and video. The mechanisms are designed based on 2D information. In this paper, we propose a new similarity method, based on 3D information extracted from a VRML object database. The system includes multiple subsystems, which are conducted in two main parts. The first part includes the VRML object parser system and the normalization system. The second part includes the comparison system, database management system and a friendly graphical user interface. The method is the first step of our project, which aims to incorporate feature extraction of virtual reality objects, such as chairs, car, and others in 3D space. House interior designers can use the proposed system. The user can select proper scenes and furniture in order to meet the requirement of potential customers. more...
- Published
- 2003
- Full Text
- View/download PDF
50. Multimedia presentation design using data flow diagrams
- Author
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Timothy K. Shih, Shuo-Chih Hsu, Ching-Sheng Wang, Huan-Chao Keh, S.K.C. Lo, Ying-Hong Wang, and Chin-hwa Kuo
- Subjects
Structured analysis ,Visual Basic ,Multimedia ,Computer science ,business.industry ,Programming language ,media_common.quotation_subject ,Software development ,Petri net ,computer.software_genre ,Data flow diagram ,Presentation ,Presentation logic ,business ,computer ,computer.programming_language ,Visual programming language ,media_common - Abstract
Structured analysis/design methodology has been used in software development for many years. We propose a revised data flow diagram technique and system based on the structured analysis methodology. The system allows a multimedia presentation designer to stepwise refine his/her presentation toward an interactive Petri net, which defines the temporal behaviour of the presentation. The generated presentation can mutate itself at runtime. Therefore, the presentation can act according to the audience's responses. The system is implemented in Visual C++ and Visual Basic running under Windows 95/NT. more...
- Published
- 2002
- Full Text
- View/download PDF
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