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563 results on '"Fellner, Dieter"'

1. Transparency Distortion Robustness for SOTA Image Segmentation Tasks

Author

Knauthe, Volker, Rak, Arne, Wirth, Tristan, Pöllabauer, Thomas, Metzler, Simon, Kuijper, Arjan, and Fellner, Dieter W.

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

Semantic Image Segmentation facilitates a multitude of real-world applications ranging from autonomous driving over industrial process supervision to vision aids for human beings. These models are usually trained in a supervised fashion using example inputs. Distribution Shifts between these examples and the inputs in operation may cause erroneous segmentations. The robustness of semantic segmentation models against distribution shifts caused by differing camera or lighting setups, lens distortions, adversarial inputs and image corruptions has been topic of recent research. However, robustness against spatially varying radial distortion effects that can be caused by uneven glass structures (e.g. windows) or the chaotic refraction in heated air has not been addressed by the research community yet. We propose a method to synthetically augment existing datasets with spatially varying distortions. Our experiments show, that these distortion effects degrade the performance of state-of-the-art segmentation models. Pretraining and enlarged model capacities proof to be suitable strategies for mitigating performance degradation to some degree, while fine-tuning on distorted images only leads to marginal performance improvements.

Published
2024

2. Influence of Water Droplet Contamination for Transparency Segmentation

Author

Knauthe, Volker, Weitz, Paul, Pöllabauer, Thomas, Wirth, Tristan, Rak, Arne, Kuijper, Arjan, and Fellner, Dieter W.

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

Computer vision techniques are on the rise for industrial applications, like process supervision and autonomous agents, e.g., in the healthcare domain and dangerous environments. While the general usability of these techniques is high, there are still challenging real-world use-cases. Especially transparent structures, which can appear in the form of glass doors, protective casings or everyday objects like glasses, pose a challenge for computer vision methods. This paper evaluates the combination of transparent objects in conjunction with (naturally occurring) contamination through environmental effects like hazing. We introduce a novel publicly available dataset containing 489 images incorporating three grades of water droplet contamination on transparent structures and examine the resulting influence on transparency handling. Our findings show, that contaminated transparent objects are easier to segment and that we are able to distinguish between different severity levels of contamination with a current state-of-the art machine-learning model. This in turn opens up the possibility to enhance computer vision systems regarding resilience against, e.g., datashifts through contaminated protection casings or implement an automated cleaning alert.

Published
2024

3. Fast Training Data Acquisition for Object Detection and Segmentation using Black Screen Luminance Keying

Author

Pöllabauer, Thomas, Knauthe, Volker, Boller, André, Kuijper, Arjan, and Fellner, Dieter

Subjects
Computer Science - Computer Vision and Pattern Recognition, Computer Science - Artificial Intelligence
Abstract

Deep Neural Networks (DNNs) require large amounts of annotated training data for a good performance. Often this data is generated using manual labeling (error-prone and time-consuming) or rendering (requiring geometry and material information). Both approaches make it difficult or uneconomic to apply them to many small-scale applications. A fast and straightforward approach of acquiring the necessary training data would allow the adoption of deep learning to even the smallest of applications. Chroma keying is the process of replacing a color (usually blue or green) with another background. Instead of chroma keying, we propose luminance keying for fast and straightforward training image acquisition. We deploy a black screen with high light absorption (99.99\%) to record roughly 1-minute long videos of our target objects, circumventing typical problems of chroma keying, such as color bleeding or color overlap between background color and object color. Next we automatically mask our objects using simple brightness thresholding, saving the need for manual annotation. Finally, we automatically place the objects on random backgrounds and train a 2D object detector. We do extensive evaluation of the performance on the widely-used YCB-V object set and compare favourably to other conventional techniques such as rendering, without needing 3D meshes, materials or any other information of our target objects and in a fraction of the time needed for other approaches. Our work demonstrates highly accurate training data acquisition allowing to start training state-of-the-art networks within minutes., Comment: 32. International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision'2024

Published
2024

6. Distortion-Based Transparency Detection Using Deep Learning on a Novel Synthetic Image Dataset

Author

Knauthe, Volker, Pöllabauer, Thomas, Faller, Katharina, Kraus, Maurice, Wirth, Tristan, Buelow, Max von, Kuijper, Arjan, Fellner, Dieter W., Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gade, Rikke, editor, Felsberg, Michael, editor, and Kämäräinen, Joni-Kristian, editor

Published
2023
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7. Integrating GPU-Accelerated Tetrahedral Mesh Editing and Simulation

Author

Ströter, Daniel, Halm, Andreas, Krispel, Ulrich, Mueller-Roemer, Johannes S., Fellner, Dieter W., 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, Wagner, Gerd, editor, Werner, Frank, editor, Oren, Tuncer, editor, and De Rango, Floriano, editor

Published
2023
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10. Visual-Interactive Similarity Search for Complex Objects by Example of Soccer Player Analysis

Author

Bernard, Jürgen, Ritter, Christian, Sessler, David, Zeppelzauer, Matthias, Kohlhammer, Jörn, and Fellner, Dieter

Subjects
Computer Science - Learning, Computer Science - Information Retrieval
Abstract

The definition of similarity is a key prerequisite when analyzing complex data types in data mining, information retrieval, or machine learning. However, the meaningful definition is often hampered by the complexity of data objects and particularly by different notions of subjective similarity latent in targeted user groups. Taking the example of soccer players, we present a visual-interactive system that learns users' mental models of similarity. In a visual-interactive interface, users are able to label pairs of soccer players with respect to their subjective notion of similarity. Our proposed similarity model automatically learns the respective concept of similarity using an active learning strategy. A visual-interactive retrieval technique is provided to validate the model and to execute downstream retrieval tasks for soccer player analysis. The applicability of the approach is demonstrated in different evaluation strategies, including usage scenarions and cross-validation tests.

Published
2017

11. Distance Measurements of CAD Models in Boundary Representation

Author

Krispel, Ulrich, Fellner, Dieter W., Ullrich, Torsten, 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, Gavrilova, Marina L., editor, Tan, C.J. Kenneth, editor, and Sourin, Alexei, editor

Published
2020
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15. Generalized Trajectory Planning for Nonlinear Interventions

Author

Fauser, Johannes, Stenin, Igor, Kristin, Julia, Klenzner, Thomas, Schipper, Jörg, Fellner, Dieter, Mukhopadhyay, Anirban, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Stoyanov, Danail, editor, Taylor, Zeike, editor, Sarikaya, Duygu, editor, McLeod, Jonathan, editor, González Ballester, Miguel Angel, editor, Codella, Noel C.F., editor, Martel, Anne, editor, Maier-Hein, Lena, editor, Malpani, Anand, editor, Zenati, Marco A., editor, De Ribaupierre, Sandrine, editor, Xiongbiao, Luo, editor, Collins, Toby, editor, Reichl, Tobias, editor, Drechsler, Klaus, editor, Erdt, Marius, editor, Linguraru, Marius George, editor, Oyarzun Laura, Cristina, editor, Shekhar, Raj, editor, Wesarg, Stefan, editor, Celebi, M. Emre, editor, Dana, Kristin, editor, and Halpern, Allan, editor

Published
2018
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22. ROBBE – Robot-aided processing of assemblies during the dismantling of nuclear power plants

Author

Santos Pedro, Recknagel Jörg, Knuth Martin, Steinbacher Klaus, Ritz Martin, Wassmann Burkhard, and Fellner Dieter

Subjects
Nuclear engineering. Atomic power, TK9001-9401
Abstract

For a successful decommissioning and dismantling of an NPP (Nuclear Power Plant), correct and controlled processing of all components is necessary, whereby a large part of the work relates to coated (mainly painted) steel components, which make up a significant proportion of the total inventory of the power plant to be processed. The contamination of these components is reduced by removing the surface coating using UHP (Ultra-High-Pressure) water jet blasting technology. Thus, the decontaminated material is released to be recycled conventionally after receiving clearance in accordance with Chap. 3 StrlSchV (German Federal Law Gazette 2018 No. 41: StrlSchV, 2018). The manual processing of these individual parts is cost-intensive, so that an autonomous, automated solution is more economical while increasing throughput at repeatable high quality. ROBBE aims at implementing a robot-assisted, automated and autonomous decoating procedure of component groups using UHP water jet blasting technology and implements it ata German NPP in Biblis on an industrial, productive scale.

Published
2022
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27. Constructive Roofs from Solid Building Primitives

Author

Edelsbrunner, Johannes, Krispel, Ulrich, Havemann, Sven, Sourin, Alexei, Fellner, Dieter W., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Gavrilova, Marina L., editor, Tan, C.J. Kenneth, editor, Iglesias, Andrés, editor, Shinya, Mikio, editor, Galvez, Akemi, editor, and Sourin, Alexei, editor

Published
2016
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28. Mid-Air Gestures for Virtual Modeling with Leap Motion

Author

Cui, Jian, Fellner, Dieter W., Kuijper, Arjan, Sourin, Alexei, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Streitz, Norbert, editor, and Markopoulos, Panos, editor

Published
2016
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30. Multi-kernel Ray Traversal for Graphics Processing Units

Author

Schiffer, Thomas, Fellner, Dieter W., Barbosa, Simone Diniz Junqueira, Series Editor, Filipe, Joaquim, Series Editor, Kotenko, Igor, Series Editor, Sivalingam, Krishna M., Series Editor, Washio, Takashi, Series Editor, Yuan, Junsong, Series Editor, Zhou, Lizhu, Series Editor, Battiato, Sebastiano, editor, Coquillart, Sabine, editor, Pettré, Julien, editor, Laramee, Robert S., editor, Kerren, Andreas, editor, and Braz, José, editor

Published
2015
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31. Immersive Interaction Paradigms for Controlling Virtual Worlds by Customer Devices Exemplified in a Virtual Planetarium

Author

Schaller, Andreas, Biedenkapp, Tim, Keil, Jens, Fellner, Dieter W., Kuijper, Arjan, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Antona, Margherita, editor, and Stephanidis, Constantine, editor

Published
2015
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36. Modeling Procedural Knowledge: A Generative Modeler for Cultural Heritage

Author

Schinko, Christoph, Strobl, Martin, Ullrich, Torsten, Fellner, Dieter W., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Ioannides, Marinos, editor, Fellner, Dieter, editor, Georgopoulos, Andreas, editor, and Hadjimitsis, Diofantos G., editor

Published
2010
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37. A Publishing Workflow for Cultural Heritage Artifacts from 3D-Reconstruction to Internet Presentation

Author

Berndt, René, Buchgraber, Gerald, Havemann, Sven, Settgast, Volker, Fellner, Dieter W., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Ioannides, Marinos, editor, Fellner, Dieter, editor, Georgopoulos, Andreas, editor, and Hadjimitsis, Diofantos G., editor

Published
2010
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38. Procedural Shape Modeling in Digital Humanities: Potentials and Issues

Author

Havemann, Sven, Wagener, Olaf, Fellner, Dieter, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Ioannides, Marinos, editor, and Quak, Ewald, editor

Published
2014
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39. The Potential of 3D Internet in the Cultural Heritage Domain

Author

Santos, Pedro, Serna, Sebastian Pena, Stork, André, Fellner, Dieter, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Ioannides, Marinos, editor, and Quak, Ewald, editor

Published
2014
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40. A Benchmarking Model for Sensors in Smart Environments

Author

Braun, Andreas, Wichert, Reiner, Kuijper, Arjan, Fellner, Dieter W., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Aarts, Emile, editor, de Ruyter, Boris, editor, Markopoulos, Panos, editor, van Loenen, Evert, editor, Wichert, Reiner, editor, Schouten, Ben, editor, Terken, Jacques, editor, Van Kranenburg, Rob, editor, Den Ouden, Elke, editor, and O'Hare, Gregory, editor

Published
2014
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49. Adaptive Semantic Visualization for Bibliographic Entries

Author

Nazemi, Kawa, Retz, Reimond, Bernard, Jürgen, Kohlhammer, Jörn, Fellner, Dieter, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Bebis, George, editor, Boyle, Richard, editor, Parvin, Bahram, editor, Koracin, Darko, editor, Li, Baoxin, editor, Porikli, Fatih, editor, Zordan, Victor, editor, Klosowski, James, editor, Coquillart, Sabine, editor, Luo, Xun, editor, Chen, Min, editor, and Gotz, David, editor

Published
2013
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50. Embedding Biomolecular Information in a Scene Graph System

Author

Halm, Andreas, Eggeling, Eva, Fellner, Dieter W., Farin, Gerald, editor, Hege, Hans-Christian, editor, Hoffman, David, editor, Johnson, Christopher R., editor, Polthier, Konrad, editor, Rumpf, Martin, editor, Linsen, Lars, editor, Hagen, Hans, editor, and Hamann, Bernd, editor

Published
2012
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