Dr. Ping Wah Wong Profile

Dr. Ping Wah Wong

Consultant at IDzap LLC

SPIE Involvement:

Author | Instructor

Proceedings Article | 24 January 2012 Paper

A method for the evaluation of wide dynamic range cameras

Ping Wah Wong, Yu Hua Lu

Proceedings Volume 8299, 829905 (2012) https://doi.org/10.1117/12.907078

KEYWORDS: Cameras, Image quality, Signal to noise ratio, Composites, Resistance, Video, Transparency, Image quality standards, Digital cameras, Calibration

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Proceedings Article | 21 March 2005 Paper

On steganalysis of plus-minus one embedding of continuous-tone images

Ping Wah Wong, Hong Chen, Zhongjue Tang

Proceedings Volume 5681, (2005) https://doi.org/10.1117/12.596993

KEYWORDS: Wavelets, Steganalysis, Denoising, Databases, Image analysis, Steganography, Image processing, Linear filtering, Data hiding, Stochastic processes

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Proceedings Article | 20 June 2003 Paper

Multiresolution binary image embedding

Ping Wah Wong

Proceedings Volume 5020, (2003) https://doi.org/10.1117/12.479738

KEYWORDS: Halftones, Binary data, Diffusion, Digital watermarking, Image resolution, Image quality, Printing, Visualization, Image processing, Composites

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Proceedings Article | 9 May 2000 Paper

Secret and public key authentication watermarking schemes that resist vector quantization attack

Ping Wong, Nasir Memon

Proceedings Volume 3971, (2000) https://doi.org/10.1117/12.384996

KEYWORDS: Digital watermarking, Raster graphics, Binary data, Quantization, Digital imaging, Image encryption, Bromine, Image quality, Image transmission, Error control coding

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Proceedings Article | 9 April 1999 Paper

Buyer-seller watermarking protocol based on amplitude modulation and the El Gamal Public Key Crypto System

Nasir Memon, Ping Wong

Proceedings Volume 3657, (1999) https://doi.org/10.1117/12.344679

KEYWORDS: Digital watermarking, Image encryption, Amplitude modulation, Electroluminescence, Multimedia, Reselling, Detection and tracking algorithms, Computer security, Image transmission, Video

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Proceedings Article | 4 April 1997 Paper

Optimum error-diffusion kernel design

Ping Wong, Jan Allebach

Proceedings Volume 3018, (1997) https://doi.org/10.1117/12.271597

KEYWORDS: Diffusion, Halftones, Binary data, Image filtering, Digital filtering, Optical filters, Error analysis, Nonlinear filtering, Iterative methods, Visualization

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Proceedings Article | 22 April 1996 Paper

Mean-matching halftoning on a rotated quad-tree structure

Ping Wong

Proceedings Volume 2657, (1996) https://doi.org/10.1117/12.238742

KEYWORDS: Halftones, Nonimpact printing, Binary data, Roads, Human vision and color perception, Image segmentation, Visual system, Diffusion, Image resolution, Calculus

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Proceedings Article | 20 April 1995 Paper

Error diffusion with delayed decision

Ping Wong

Proceedings Volume 2411, (1995) https://doi.org/10.1117/12.207538

KEYWORDS: Diffusion, Halftones, Distortion, Binary data, Algorithm development, Image processing, Raster graphics, Image quality, Feedback loops, Roads

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Proceedings Article | 3 March 1995 Paper

JPEG compression for a grayscale printing pipeline

Rick Vander Kam, Ping Wong, Robert Gray

Proceedings Volume 2418, (1995) https://doi.org/10.1117/12.204133

KEYWORDS: Quantization, Computer programming, Printing, Image compression, Eye, Visualization, Image quality, Distortion, Visual system, Halftones

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Proceedings Article | 23 March 1994 Paper

Adaptive error diffusion

Ping Wong

Proceedings Volume 2182, (1994) https://doi.org/10.1117/12.171076

KEYWORDS: Diffusion, Halftones, Filtering (signal processing), Image filtering, Image processing, Signal processing, Video processing, Optical filters, Feedback control, Image quality

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Proceedings Article | 19 May 1992 Paper

Multiscale image coder

Ping Wong

Proceedings Volume 1657, (1992) https://doi.org/10.1117/12.58312

KEYWORDS: Wavelets, Image processing, Image quality, Image compression, Signal processing, Visual system, Quantization, Stochastic processes, Sensory processes, Distortion

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Proceedings Article | 1 April 1991 Paper

High-resolution reconstruction of line drawings

Ping Wong, Jack Koplowitz

Proceedings Volume 1398, (1991) https://doi.org/10.1117/12.47779

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Showing 5 of 12 publications

SPIE Conference Volume | 4 February 2009

Media Forensics and Security

SPIE Conference Volume | 2 April 2008

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

SPIE Conference Volume | 26 February 2007

Security, Steganography, and Watermarking of Multimedia Contents IX

SPIE Conference Volume | 23 January 2006

Security, Steganography, and Watermarking of Multimedia Contents VIII

SPIE Conference Volume | 21 March 2005

Security, Steganography, and Watermarking of Multimedia Contents VII

Showing 5 of 11 publications

Conference Committee Involvement (11)

Media Forensics and Security XI

19 January 2009 | San Jose, California, United States

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

28 January 2008 | San Jose, California, United States

Security, Steganography, and Watermarking of Multimedia Contents IX

29 January 2007 | San Jose, CA, United States

Security, Steganography, and Watermarking of Multimedia Contents VIII

16 January 2006 | San Jose, California, United States

Security, Steganography, and Watermarking of Multimedia Contents VII

17 January 2005 | San Jose, California, United States

Showing 5 of 11 Conference Committees

Course Instructor

SC680: Introduction to Digital Halftoning

This course will provide an introduction to the fundamental concepts of digital halftoning. Overview of the most successful digital halftoning algorithms will be given. We will discuss basic aspects of printer modeling and color as they pertain to digital halftoning, compression, watermarking, and descreening of digital halftones.

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SC514: Introduction to Digital Halftoning

This course provides an introduction to the fundamental concepts of digital halftoning with an overview of the most successful digital halftoning algorithms. We discuss basic aspects of printer modeling and color as they pertain to digital halftoning, compression, watermarking, and descreening of digital halftones.

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SC515: Advanced Concepts in Digital Halftoning

This course provides an in-depth look at advanced concepts of digital halftoning. Monochrome and color models for the rendering device and human visual system are presented, and model-based, iterative approaches to digital halftoning and application to model-based monochrome and color halftoning are discussed.

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