Dr. Oscar Chi Lim Au Profile

Dr. Oscar Chi Lim Au

Assistant Professor at HKUST

SPIE Involvement:

Author

Publications (17)

Proceedings Article | 24 June 2005 Paper

Efficient and reliable scene change detection in MPEG compressed video

Wing-San Chau, Oscar Au, Tai-Wai Chan, Tak-Song Chong

Proceedings Volume 5960, 59604J (2005) https://doi.org/10.1117/12.632724

KEYWORDS: Video, Visualization, Video compression, Motion measurement, Detection and tracking algorithms, Linear filtering, Video processing, Image processing, Motion estimation, Semantic video

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Proceedings Article | 1 August 2001 Paper

Data hiding technique in JPEG compressed domain

Peter Wong, Oscar Au, Justy Wong

Proceedings Volume 4314, (2001) https://doi.org/10.1117/12.435412

KEYWORDS: Digital watermarking, Data hiding, Image compression, Image processing, Quantization, Visualization, Image quality, Computer programming, Internet, Multimedia

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Proceedings Article | 1 August 2001 Paper

Data hiding in halftone images with parity coding

Ming Fu, Oscar Au

Proceedings Volume 4314, (2001) https://doi.org/10.1117/12.435419

KEYWORDS: Halftones, Digital watermarking, Data hiding, Visualization, Image processing, Diffusion, Image quality, Image compression, Printing, Multimedia

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Proceedings Article | 1 August 2001 Paper

Review on attacks, problems, and weaknesses of digital watermarking and the pixel reallocation attack

K. Tsang, Oscar Au

Proceedings Volume 4314, (2001) https://doi.org/10.1117/12.435422

KEYWORDS: Digital watermarking, Sensors, Digital filtering, Signal processing, Distortion, Image filtering, Video, Interference (communication), Filtering (signal processing), Target detection

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Proceedings Article | 1 August 2001 Paper

Robust and high-quality video watermarking with the use of temporal redundancy

K. Tsang, Oscar Au

Proceedings Volume 4314, (2001) https://doi.org/10.1117/12.435454

KEYWORDS: Digital watermarking, Video, Signal detection, Modulation, Image compression, Internet, Distortion, Digital video discs, Image quality, Detection and tracking algorithms

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Proceedings Article | 29 December 2000 Paper

Advanced deinterlacing techniques with the use of zonal-based algorithms

Alexis Tourapis, Oscar Au, Ming Liou

Proceedings Volume 4310, (2000) https://doi.org/10.1117/12.411785

KEYWORDS: Motion estimation, Digital filtering, Video, Spatial filters, Diamond, Computer simulations, Video processing, Visualization, Device simulation, Semantic video

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Proceedings Article | 29 December 2000 Paper

Fast adaptive-spatial-varying filtering for inverse halftoning

Ming Fu, Oscar Au

Proceedings Volume 4310, (2000) https://doi.org/10.1117/12.411862

KEYWORDS: Halftones, Digital filtering, Image filtering, Atrial fibrillation, Linear filtering, Spatial filters, Image processing, Detection and tracking algorithms, Electronic filtering, Printing

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Proceedings Article | 29 December 2000 Paper

Predictive motion vector field adaptive search technique (PMVFAST): enhancing block-based motion estimation

Alexis Tourapis, Oscar Au, Ming Liou

Proceedings Volume 4310, (2000) https://doi.org/10.1117/12.411871

KEYWORDS: Diamond, Motion estimation, Distortion, Computer programming, Diamond patterning, Visualization, Video coding, Video, Algorithm development, Computer simulations

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Proceedings Article | 30 May 2000 Paper

Hiding data in halftone image using modified data hiding error diffusion

Ming Fu, Oscar Au

Proceedings Volume 4067, (2000) https://doi.org/10.1117/12.386631

KEYWORDS: Halftones, Diffusion, Data hiding, Error analysis, Digital watermarking, Image quality, Visualization, Image processing, Convolution, Lab on a chip

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Proceedings Article | 30 May 2000 Paper

New predictive diamond search algorithm for block-based motion estimation

Alexis Tourapis, Guobin Shen, Ming Liou, Oscar Au, Ishfaq Ahmad

Proceedings Volume 4067, (2000) https://doi.org/10.1117/12.386555

KEYWORDS: Diamond, Motion estimation, Computer simulations, Computer programming, Video coding, Video compression, Diamond patterning, Picosecond phenomena, Electronics engineering, Computer science

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Proceedings Article | 9 May 2000 Paper

Data hiding for halftone images

Ming Fu, Oscar Au

Proceedings Volume 3971, (2000) https://doi.org/10.1117/12.384977

KEYWORDS: Halftones, Data hiding, Diffusion, Visualization, Image quality, Digital watermarking, Printing, Image filtering, Image processing, Signal to noise ratio

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Proceedings Article | 9 May 2000 Paper

Data hiding and watermarking in JPEG-compressed domain by DC coefficient modification

Peter Wong, Oscar Au, Justy Wong

Proceedings Volume 3971, (2000) https://doi.org/10.1117/12.384978

KEYWORDS: Digital watermarking, Data hiding, Image compression, Digital imaging, Image filtering, Bandpass filters, Image quality, Image processing, Multimedia, Quality measurement

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Proceedings Article | 19 April 2000 Paper

Fast motion estimation for frame-rate conversion

Justy Wong, Oscar Au, Peter Wong

Proceedings Volume 3974, (2000) https://doi.org/10.1117/12.382954

KEYWORDS: Video, Motion estimation, Video compression, Multimedia, Video processing, Gold, Electronics engineering, Internet, Image processing, Computer simulations

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Proceedings Article | 28 December 1998 Paper

Fast motion estimation using circular zonal search

Alexis Tourapis, Oscar Au, Ming Liou

Proceedings Volume 3653, (1998) https://doi.org/10.1117/12.334660

KEYWORDS: Motion estimation, Video, Video coding, Visualization, Cameras, Computer programming, Algorithm development, Computer simulations, Astatine, Gold

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Proceedings Article | 10 January 1997 Paper

Fast piecewise linear approximation of rate-distortion functions for MPEG video

Chun Choi, Oscar Au

Proceedings Volume 3024, (1997) https://doi.org/10.1117/12.263218

KEYWORDS: Distortion, Quantization, Video, Video coding, Visualization, Computer simulations, Rhodium, Feedback control, Image quality standards, Video compression

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Proceedings Article | 21 April 1995 Paper

Fast motion compensated temporal interpolation for video

Chi-Kong Wong, Oscar Au

Proceedings Volume 2501, (1995) https://doi.org/10.1117/12.206643

KEYWORDS: Motion estimation, Visualization, Video, Eye, Video coding, Video compression, Image quality, Receivers, Databases, Computer simulations

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Proceedings Article | 16 September 1994 Paper

Improved fast block matching algorithm in the feature domain

Yiu-Hung Fok, Oscar Au

Proceedings Volume 2308, (1994) https://doi.org/10.1117/12.185939

KEYWORDS: Aluminium phosphide, Video compression, Gold, Motion estimation, Computer simulations, Video, Distance measurement, Image quality, Electronics engineering, Data storage

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Showing 5 of 17 publications

Conference Committee Involvement (4)

Security, Forensics, Steganography, and Watermarking of Multimedia Contents X

28 January 2008 | San Jose, California, United States

Electronic Imaging and Multimedia Technology V

12 November 2007 | Beijing, China

Security, Steganography, and Watermarking of Multimedia Contents IX

29 January 2007 | San Jose, CA, United States

Electronic Imaging and Multimedia Technology IV

8 November 2004 | Beijing, China

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