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697 results on '"Lin, Cheng-Kuan"'

1. MP-PolarMask: A Faster and Finer Instance Segmentation for Concave Images

Author

Wang, Ke-Lei, Chou, Pin-Hsuan, Chou, Young-Ching, Liu, Chia-Jen, Lin, Cheng-Kuan, and Tseng, Yu-Chee

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

While there are a lot of models for instance segmentation, PolarMask stands out as a unique one that represents an object by a Polar coordinate system. With an anchor-box-free design and a single-stage framework that conducts detection and segmentation at one time, PolarMask is proved to be able to balance efficiency and accuracy. Hence, it can be easily connected with other downstream real-time applications. In this work, we observe that there are two deficiencies associated with PolarMask: (i) inability of representing concave objects and (ii) inefficiency in using ray regression. We propose MP-PolarMask (Multi-Point PolarMask) by taking advantage of multiple Polar systems. The main idea is to extend from one main Polar system to four auxiliary Polar systems, thus capable of representing more complicated convex-and-concave-mixed shapes. We validate MP-PolarMask on both general objects and food objects of the COCO dataset, and the results demonstrate significant improvement of 13.69% in AP_L and 7.23% in AP over PolarMask with 36 rays.

Published
2024

2. Tracking Players in a Badminton Court by Two Cameras

Author

Chou, Young-Ching, Zhang, Shen-Ru, Chen, Bo-Wei, Chen, Hong-Qi, Lin, Cheng-Kuan, and Tseng, Yu-Chee

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

This study proposes a simple method for multi-object tracking (MOT) of players in a badminton court. We leverage two off-the-shelf cameras, one on the top of the court and the other on the side of the court. The one on the top is to track players' trajectories, while the one on the side is to analyze the pixel features of players. By computing the correlations between adjacent frames and engaging the information of the two cameras, MOT of badminton players is obtained. This two-camera approach addresses the challenge of player occlusion and overlapping in a badminton court, providing player trajectory tracking and multi-angle analysis. The presented system offers insights into the positions and movements of badminton players, thus serving as a coaching or self-training tool for badminton players to improve their gaming strategies.

Published
2023

8. A Local Diagnosis Algorithm for Hypercube-like Networks under the BGM Diagnosis Model

Author

Lin, Cheng-Kuan, Kung, Tzu-Liang, Hung, Chun-Nan, and Teng, Yuan-Hsiang

Subjects
Computer Science - Discrete Mathematics
Abstract

System diagnosis is process of identifying faulty nodes in a system. An efficient diagnosis is crucial for a multiprocessor system. The BGM diagnosis model is a modification of the PMC diagnosis model, which is a test-based diagnosis. In this paper, we present a specific structure and propose an algorithm for diagnosing a node in a system under the BGM model. We also give a polynomial-time algorithm that a node in a hypercube-like network can be diagnosed correctly in three test rounds under the BGM diagnosis model.

Published
2021

9. The Component Diagnosability of General Networks

Author

Zhuang, Hongbin, Guo, Wenzhong, Li, Xiaoyan, Liu, Ximeng, and Lin, Cheng-Kuan

Subjects
Computer Science - Distributed, Parallel, and Cluster Computing, Computer Science - Discrete Mathematics
Abstract

The processor failures in a multiprocessor system have a negative impact on its distributed computing efficiency. Because of the rapid expansion of multiprocessor systems, the importance of fault diagnosis is becoming increasingly prominent. The $h$-component diagnosability of $G$, denoted by $ct_{h}(G)$, is the maximum number of nodes of the faulty set $F$ that is correctly identified in a system, and the number of components in $G-F$ is at least $h$. In this paper, we determine the $(h+1)$-component diagnosability of general networks under the PMC model and MM$^{*}$ model. As applications, the component diagnosability is explored for some well-known networks, including complete cubic networks, hierarchical cubic networks, generalized exchanged hypercubes, dual-cube-like networks, hierarchical hypercubes, Cayley graphs generated by transposition trees (except star graphs), and DQcube as well. Furthermore, we provide some comparison results between the component diagnosability and other fault diagnosabilities., Comment: 21 pages, 11 figures

Published
2021
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16. Computation Offloading Algorithm Based on Deep Reinforcement Learning and Multi-Task Dependency for Edge Computing

Author

Lin, Tengxiang, Lin, Cheng-Kuan, Chen, Zhen, Cheng, Hongju, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Prates, Raquel Oliveira, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Hsieh, Sun-Yuan, editor, Hung, Ling-Ju, editor, Klasing, Ralf, editor, Lee, Chia-Wei, editor, and Peng, Sheng-Lung, editor

Published
2022
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17. A Conditional Local Diagnosis Algorithm on the Arrangement Graph

Author

Kung, Tzu-Liang, Lin, Cheng-Kuan, Teng, Yuan-Hsiang, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, and Barolli, Leonard, editor

Published
2022
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18. On the Neighborhood-Connectivity of Locally Twisted Cube Networks

Author

Kung, Tzu-Liang, Lin, Cheng-Kuan, Hung, Chun-Nan, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Barolli, Leonard, editor, Yim, Kangbin, editor, and Chen, Hsing-Chung, editor

Published
2022
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22. A Single-Stage Electronic Lighting Driver Circuit Utilizing SiC Schottky Diodes for Supplying a Deep Ultraviolet LED Disinfection and Sterilization Lamp.

Author

Cheng, Chun-An, Chang, Chien-Hsuan, Cheng, Hung-Liang, Chang, En-Chih, Lan, Long-Fu, Hou, Sheng-Hong, and Lin, Cheng-Kuan

Subjects
STERILIZATION (Disinfection), SCHOTTKY barrier diodes, LINE drivers (Integrated circuits), ENERGY dissipation, LIGHT emitting diodes, AC DC transformers
Abstract

Recently, a new type of lighting source, deep ultraviolet light-emitting diode (LED), has appeared in the markets of space purification and surface sterilization. In this paper, a new type of electronic lighting driver for supplying a deep-ultraviolet LED sterilization lamp is proposed and developed. The main circuit combines a buck converter and a flyback converter into a single-stage single-switch buck-flyback AC-DC power converter with power factor correction. In addition, the proposed electronic lighting driver leverages a wide bandgap SiC Schottky diode as the output diode to lower the power diode losses and recycles the energy stored in the leakage inductance of the transformer in order to improve the circuit efficiency. The magnetizing inductor inside the presented AC-DC power converter is designed to operate in discontinuous conduction mode (DCM), which naturally enables power factor correction (PFC). A single-stage prototype driver with a power rating of 3.6 W (90 V/40 mA) was developed and implemented for providing a deep ultraviolet LED disinfection and sterilization lamp. Experimental results show that the measured power factor (PF) is greater than 0.9 and the measured total harmonic distortion (THD) of the input current is less than 18% at an input utility voltage of 110 V. Furthermore, the measured output voltage ripple factor is less than 1% and the output current ripple factor is less than 4%. In addition, the proposed single-stage electronic lighting driver for supplying a deep ultraviolet LED disinfection and sterilization lamp achieves high circuit efficiency (greater than 90%), low circuit component count, and low circuit cost. [ABSTRACT FROM AUTHOR]

Published
2024
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23. A New Measure for Locally t-Diagnosable Under PMC Model

Author

Chen, Meirun, Hsu, D. Frank, Lin, Cheng-Kuan, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Chen, Chi-Yeh, editor, Hon, Wing-Kai, editor, Hung, Ling-Ju, editor, and Lee, Chia-Wei, editor

Published
2021
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24. A Loopless Algorithm for Generating (k, m)-ary Trees in Gray-Code Order

Author

Chang, Yu-Hsuan, Wu, Ro-Yu, Lin, Cheng-Kuan, Chang, Jou-Ming, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, and Li, Minming, editor

Published
2020
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32. A Diagnosis Algorithm on the 2D-torus Network

Author

Wang, Lidan, Liu, Ningning, Lin, Cheng-Kuan, Kung, Tzu-Liang, Teng, Yuan-Hsiang, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Barolli, Leonard, editor, Xhafa, Fatos, editor, Javaid, Nadeem, editor, and Enokido, Tomoya, editor

Published
2019
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45. Embedding Exchanged Hypercubes into Rings and Ladders

Author

Fan, Weibei, Fan, Jianxi, Lin, Cheng-Kuan, Han, Zhijie, Li, Peng, Wang, Ruchuan, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Vaidya, Jaideep, editor, and Li, Jin, editor

Published
2018
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46. Fault Diagnosis Algorithm for WSN Based on Clustering and Credibility

Author

Wang, Lidan, Xu, Xin, Zhang, Xiaofei, Lin, Cheng-Kuan, Tseng, Yu-Chee, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Vaidya, Jaideep, editor, and Li, Jin, editor

Published
2018
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48. The branching patterns and termination points of the facial artery: a cadaveric anatomical study.

Author

Vu Hoang Nguyen, Lin Cheng-Kuan, Tuan Anh Nguyen, and Trang Huu Ngoc Thao Cai

Subjects
*BLOOD vessels, *FACIAL reconstruction (Anthropology), *PLASTIC surgery
Abstract

Background: The facial artery is an important blood vessel responsible for supplying the anterior face. Understanding the branching patterns of the facial artery plays a crucial role in various medical specialties such as plastic surgery, dermatology, and oncology. This knowledge contributes to improving the success rate of facial reconstruction and aesthetic procedures. However, debate continues regarding the classification of facial artery branching patterns in the existing literature. Methods: We conducted a comprehensive anatomical study, in which we dissected 102 facial arteries from 52 embalmed and formaldehyde-fixed Vietnamese cadavers at the Anatomy Department, University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam. Results: Our investigation revealed eight distinct termination points and identified 35 combinations of branching patterns, including seven arterial branching patterns. These termination points included the inferior labial artery, superior labial artery, inferior alar artery, lateral nasal artery, angular artery typical, angular artery running along the lower border of the orbicularis oculi muscle, forehead branch, duplex, and short course (hypoplastic). Notably, the branching patterns of the facial artery displayed marked asymmetry between the left and right sides within the same cadaver. Conclusion: The considerable variation observed in the branching pattern and termination points of the facial artery makes it challenging to establish a definitive classification system for this vessel. Therefore, it is imperative to develop an anatomical map summarizing the major measurements and geometric features of the facial artery. Surgeons and medical professionals involved in facial surgery and procedures must consider the detailed anatomy and relative positioning of the facial artery to minimize the risk of unexpected complications. [ABSTRACT FROM AUTHOR]

Published
2024
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