Prof. Thomas Sikora Profile

Prof. Thomas Sikora

Engineer

SPIE Involvement:

Author

Publications (25)

Proceedings Article | 13 March 2024 Poster + Paper

Denoising OCT images using steered mixture of experts with multi-model inference

Aytaç Özkan, Elena Stoykova, Thomas Sikora, Violeta Madjarova

Proceedings Volume 12830, 1283009 (2024) https://doi.org/10.1117/12.3000625

KEYWORDS: Optical coherence tomography, Denoising, Speckle, Image quality, Neural networks, Machine learning, Image restoration

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Proceedings Article | 7 June 2023 Presentation + Paper

Steered mixture-of-experts autoencoder design for real-time image modelling and denoising

Elvira Fleig, Erik Bochinski, Thomas Sikora

Proceedings Volume 12571, 125710K (2023) https://doi.org/10.1117/12.2667082

KEYWORDS: Denoising, Image restoration, Image compression, Design and modelling, Image quality, Mathematical optimization, Data modeling, Cameras, Speckle

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Proceedings Article | 7 June 2023 Presentation + Paper

Sparse video representation using steered mixture-of-experts with global motion compensation

Rolf Jongebloed, Erik Bochinski, Thomas Sikora

Proceedings Volume 12571, 125710J (2023) https://doi.org/10.1117/12.2665600

KEYWORDS: Video, Motion models, Education and training, Video coding, Image compression, Video compression, Data modeling, Video processing, Modeling, Image restoration

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Proceedings Article | 17 September 2018 Presentation + Paper

Steered mixture-of-experts for light field video coding

Vasileios Avramelos, Ignace Saenen, Ruben Verhack, Glenn Van Wallendael, Peter Lambert, Thomas Sikora

Proceedings Volume 10752, 107520B (2018) https://doi.org/10.1117/12.2320563

KEYWORDS: Video, Video coding, Image compression, 3D modeling, RGB color model, Computer programming, Image segmentation, Quantization, Associative arrays, Statistical modeling

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Proceedings Article | 18 February 2009 Paper

Unsupervised object segmentation for 2D to 3D conversion

Matthias Kunter, Sebastian Knorr, Andreas Krutz, Thomas Sikora

Proceedings Volume 7237, 72371B (2009) https://doi.org/10.1117/12.806237

KEYWORDS: Image segmentation, Cameras, Image processing, Atomic force microscopy, Image analysis, Image registration, Anisotropic filtering, 3D image processing, Planets, Stars

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Proceedings Article | 19 January 2009 Paper

Improving object segmentation by reflection detection and removal

Mustafa Karaman, Lutz Goldmann, Thomas Sikora

Proceedings Volume 7257, 725709 (2009) https://doi.org/10.1117/12.805581

KEYWORDS: Reflection, Image segmentation, Video, Cameras, Video surveillance, Motion models, 3D modeling, Bidirectional reflectance transmission function, Mirrors, Visual process modeling

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SPIE Journal Paper | 1 April 2007

Efficient allocation of packet-level forward error correction in video streaming over the Internet

Yufei Yuan, Bruce Cockburn, Thomas Sikora, Mrinal Mandal

JEI, Vol. 16, Issue 02, 023012, (April 2007) https://doi.org/10.1117/12.10.1117/1.2732386

KEYWORDS: Forward error correction, Video, Video compression, Internet, Computer programming, Statistical analysis, Receivers, Promethium, Computer engineering, Image compression

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Proceedings Article | 29 January 2007 Paper

Video to the rescue of audio: shot boundary assisted speaker change detection

Amjad Samour, Mustafa Karaman, Lutz Goldmann, Thomas Sikora

Proceedings Volume 6506, 650609 (2007) https://doi.org/10.1117/12.703114

KEYWORDS: Video, Single crystal X-ray diffraction, Image segmentation, Multimedia, Speaker recognition, Reliability, Distance measurement, Solar thermal energy, Statistical analysis, Acoustics

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Proceedings Article | 29 January 2007 Paper

Optimal multiple sprite generation based on physical camera parameter estimation

Matthias Kunter, Andreas Krutz, Mrinal Mandal, Thomas Sikora

Proceedings Volume 6508, 65080B (2007) https://doi.org/10.1117/12.704145

KEYWORDS: Cameras, Video, Calibration, Image processing, Image registration, Zoom lenses, Image quality, Video coding, Reconstruction algorithms, Image compression

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Proceedings Article | 27 January 2006 Paper

Anisotropic scene geometry resampling with occlusion filling for 3DTV applications

Jangheon Kim, Thomas Sikora

Proceedings Volume 6055, 60550O (2006) https://doi.org/10.1117/12.642268

KEYWORDS: Cameras, Statistical analysis, Linear filtering, Anisotropic filtering, Nonlinear filtering, Diffusion, Anisotropic diffusion, Error analysis, Image filtering, Gaussian filters

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Proceedings Article | 19 January 2006 Paper

A new segmentation approach using Gaussian color model and temporal information

Mustafa Karaman, Lutz Goldmann, Thomas Sikora

Proceedings Volume 6077, 60771T (2006) https://doi.org/10.1117/12.642951

KEYWORDS: RGB color model, Video, Image segmentation, Reflectivity, Motion models, Data modeling, Video surveillance, Cameras, Space operations, Video compression

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Proceedings Article | 19 January 2006 Paper

Robust face detection based on components and their topology

Lutz Goldmann, Ullrich Mönich, Thomas Sikora

Proceedings Volume 6077, 60771V (2006) https://doi.org/10.1117/12.643078

KEYWORDS: Sensors, Facial recognition systems, Eye, Databases, Mouth, Nose, Pattern recognition, RGB color model, Visualization, Video

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Proceedings Article | 24 June 2005 Paper

Comparison of static background segmentation methods

Mustafa Karaman, Lutz Goldmann, Da Yu, Thomas Sikora

Proceedings Volume 5960, 596069 (2005) https://doi.org/10.1117/12.633437

KEYWORDS: RGB color model, Video, Image segmentation, Video compression, Fuzzy logic, Cameras, Video surveillance, Visualization, Quality measurement, Video processing

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Proceedings Article | 17 January 2005 Paper

Detection of goal events in soccer videos

Hyoung-Gook Kim, Steffen Roeber, Amjad Samour, Thomas Sikora

Proceedings Volume 5682, (2005) https://doi.org/10.1117/12.586533

KEYWORDS: Feature extraction, Video, Independent component analysis, Principal component analysis, Automatic tracking, Electronic filtering, Detection and tracking algorithms, Interference (communication), Denoising, Data hiding

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Proceedings Article | 18 January 2004 Paper

Human body posture recognition using MPEG-7 descriptors

Lutz Goldmann, Mustafa Karaman, Thomas Sikora

Proceedings Volume 5308, (2004) https://doi.org/10.1117/12.526666

KEYWORDS: Shape analysis, Image segmentation, Video, Pattern recognition, Feature extraction, Binary data, Matrices, Cameras, Visualization, Image classification

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Proceedings Article | 18 January 2004 Paper

Temporal layered vs. multistate video coding

Sila Ekmekci, Thomas Sikora

Proceedings Volume 5308, (2004) https://doi.org/10.1117/12.527066

KEYWORDS: Video coding, Video, Automatic repeat request, Quantization, Forward error correction, Data compression, Distortion, Video processing, Signal attenuation, Computer programming

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Proceedings Article | 18 December 2003 Paper

Performance of MPEG-7 spectral basis representations for retrieval of home video abstract

Hyoung-Gook Kim, Thomas Sikora

Proceedings Volume 5307, (2003) https://doi.org/10.1117/12.526073

KEYWORDS: Video, Feature extraction, Speech recognition, Principal component analysis, Databases, Independent component analysis, Classification systems, Data modeling, Detection and tracking algorithms, Multimedia

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Proceedings Article | 18 December 2003 Paper

Automatic segmentation of speakers in broadcast audio material

Hyoung-Gook Kim, Thomas Sikora

Proceedings Volume 5307, (2003) https://doi.org/10.1117/12.526080

KEYWORDS: Image segmentation, Detection and tracking algorithms, Feature extraction, Televisions, Principal component analysis, Distance measurement, Speaker recognition, Data modeling, Independent component analysis, Speech recognition

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Proceedings Article | 23 June 2003 Paper

Model for unbalanced multiple description video transmission using path diversity

Sila Ekmekci, Thomas Sikora

Proceedings Volume 5150, (2003) https://doi.org/10.1117/12.503393

KEYWORDS: Video, Video coding, Distortion, Visual communications, Image processing, Video processing, Estimation theory

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Proceedings Article | 7 May 2003 Paper

Unbalanced quantized multiple description video transmission using path diversity

Sila Ekmekci, Thomas Sikora

Proceedings Volume 5022, (2003) https://doi.org/10.1117/12.476699

KEYWORDS: Video coding, Video, Quantization, Distortion, Reconstruction algorithms, Computer programming, Forward error correction, Receivers, Image quality, Signal attenuation

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Proceedings Article | 1 July 2002 Paper

Relevance feedback as distribution generation

Ivo Keller, Thomas Meiers, Thomas Sikora

Proceedings Volume 4862, (2002) https://doi.org/10.1117/12.473053

KEYWORDS: Principal component analysis, Databases, Visualization, Stars, Human-machine interfaces, Feature extraction, Multimedia, Visual system, Dimension reduction, Mahalanobis distance

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Proceedings Article | 1 July 2002 Paper

Hierarchical image database browsing environment with embedded relevance feedback and three-dimensional visualization

Thomas Meiers, Ivo Keller, Johannes Zimmermann, Thomas Sikora

Proceedings Volume 4862, (2002) https://doi.org/10.1117/12.473051

KEYWORDS: Image retrieval, Image visualization, Databases, Visualization, Image processing, 3D image processing, Mahalanobis distance, Feature extraction, Dimension reduction, Content based image retrieval

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Proceedings Article | 19 December 2001 Paper

Three-dimensional browsing environment for MPEG-7 image databases

Thomas Meiers, Thomas Sikora, Ivo Keller

Proceedings Volume 4676, (2001) https://doi.org/10.1117/12.451103

KEYWORDS: Image retrieval, Visualization, Image visualization, Databases, 3D image processing, Mahalanobis distance, 3D displays, Image processing, Feature extraction, 3D visualizations

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Proceedings Article | 30 May 2000 Paper

Image visualization based on MPEG-7 color descriptors

Thomas Meiers, H. Czernoch-Peters, L. Ihlenburg, Thomas Sikora

Proceedings Volume 4067, (2000) https://doi.org/10.1117/12.386687

KEYWORDS: Image retrieval, Image visualization, Visualization, Zoom lenses, Distortion, Digital imaging, Standards development, 3D displays, Inspection

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Proceedings Article | 1 November 1991 Paper

Two-layer pyramid image coding scheme for interworking of video services in ATM

Thomas Sikora, Thiow Tan, Khok Pang

Proceedings Volume 1605, (1991) https://doi.org/10.1117/12.50289

KEYWORDS: Visual communications, Image compression, Receivers, Video, Video coding, Image enhancement, Image processing, Image quality, Image transmission, Optical filters

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