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Watermark for Digital Images
Summary
Purdue University researchers have developed a way for an owner to digitally "sign" an image by adding an invisible structure known as a digital watermark. The owner can identify changes made to the watermarked image with the verification algorithm. This test can allow images with minor alterations to still be authentic. JPEG image compression is compatible with this algorithm.
Technology Benefits
Rapid and robust authentication of imagesDecreased chances of forgery
Technology Application
Computer SecuritySoftware Industry
Detailed Technology Description
Edward DelpVIPER (Video and Image Processing Laboratory)Purdue Electrical and Computer EngineeringPurdue Biomedical Engineering
Countries
United States
Application No.
6,625,295
Country/Region
USA
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