LOSSLESS VISIBLE WATERMARKING
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United States of America Patent
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Issued Date -
Jan 1, 2009
app pub date -
Jun 29, 2007
filing date -
Jun 29, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Systems and methodologies for lossless visible watermarking of images are provided herein. The provided systems and methodologies can utilize a Pixel Value Mapping Algorithm (PVMA), wherein a watermark can be embedded into an image by transforming respective intensities of areas of the image corresponding to the watermark using a bijective mapping function. Additionally and/or alternatively, a Pixel Position Shift Algorithm (PPSA) can be used to embed a watermark into an image by shifting the position of pixels in the image corresponding to the watermark over a specified shift distance. Further, provided systems and methodologies can facilitate enhanced watermarking security by embedding a visible watermark into an image based on a secret key.
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