Mr. John Stach Profile

John Stach

R & D Manager at Digimarc Corp.

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Author

Publications (9)

Proceedings Article | 22 March 2013 Paper

Watermark embedding in optimal color direction

Robert Lyons, Alastair Reed, John Stach

Proceedings Volume 8665, 866505 (2013) https://doi.org/10.1117/12.2009879

KEYWORDS: Digital watermarking, Visibility, RGB color model, Sensors, Detection and tracking algorithms, Visual system, Printing, Packaging, CMYK color model, Signal detection

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Proceedings Article | 21 March 2013 Paper

Geometric enumerated chrominance watermark embed for spot colors

Robert Lyons, Alastair Reed, John Stach

Proceedings Volume 8664, 86640J (2013) https://doi.org/10.1117/12.2009488

KEYWORDS: Digital watermarking, Visibility, RGB color model, Sensors, Packaging, CMYK color model, Acquisition tracking and pointing, Composites, Contrast sensitivity, Neodymium

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Proceedings Article | 21 February 2012 Paper

Chrominance watermark embed using a full-color visibility model

Brett Bradley, Alastair Reed, John Stach

Proceedings Volume 8302, 83020T (2012) https://doi.org/10.1117/12.915742

KEYWORDS: Visibility, Digital watermarking, RGB color model, Eye models, Electroluminescence, Detection and tracking algorithms, Picosecond phenomena, Modulation, Image processing, Sensors

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Proceedings Article | 4 February 2009 Paper

Real-time application of digital watermarking to embed tactical metadata into full motion video captured from unmanned aerial systems

Alex Philp, Brett Bradley, John Stach, Tony Rodriguez

Proceedings Volume 7254, 725410 (2009) https://doi.org/10.1117/12.814319

KEYWORDS: Digital watermarking, Signal to noise ratio, Video, Video compression, Image compression, Sensors, Visibility, Cesium, Image processing, Error analysis

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Proceedings Article | 22 June 2004 Paper

Machine vision applications of digital watermarking

John Stach

Proceedings Volume 5306, (2004) https://doi.org/10.1117/12.527126

KEYWORDS: Digital watermarking, Machine vision, Sensors, Cameras, Imaging systems, Inspection, Visibility, Infrared sensors, Manufacturing, Light sources and illumination

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Proceedings Article | 22 June 2004 Paper

A high-capacity invertible data-hiding algorithm using a generalized reversible integer transform

John Stach, Adnan Alattar

Proceedings Volume 5306, (2004) https://doi.org/10.1117/12.527173

KEYWORDS: Digital watermarking, Image quality, Medical imaging, Image processing, Image restoration, Visualization, Image compression, Image encryption, Image retrieval, Computer simulations

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Proceedings Article | 20 June 2003 Paper

New wrinkle in dirty paper techniques

Brett Bradley, John Stach

Proceedings Volume 5020, (2003) https://doi.org/10.1117/12.477308

KEYWORDS: Quantization, Digital watermarking, Image processing, Bismuth, Image restoration, Neodymium, Interference (communication), Algorithm development, Associative arrays, Solids

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Proceedings Article | 29 April 2002 Paper

Use of web cameras for watermark detection

John Stach, Trenton Brundage, Brett Hannigan, Brett Bradley, Tony Kirk, Hugh Brunk

Proceedings Volume 4675, (2002) https://doi.org/10.1117/12.465321

KEYWORDS: Digital watermarking, Cameras, Point spread functions, CCD cameras, Sensors, Digital cameras, Signal to noise ratio, CMOS cameras, Image processing, Amplifiers

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Proceedings Article | 10 June 1996 Paper

Unified approach to feature extraction for model-based ATR

John Stach, Rajesh Sharma, Scott Shaw

Proceedings Volume 2757, (1996) https://doi.org/10.1117/12.242043

KEYWORDS: Image segmentation, Fractal analysis, Feature extraction, Synthetic aperture radar, Image processing, Autoregressive models, Scattering, Image filtering, Calibration, Composites

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Showing 5 of 9 publications

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