Image watermarking

Full Title

General purpose image data processing > Image watermarking

Child Classifications

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• G06T 2201/0051 Embedding of the watermark in the spatial domain
• G06T 2201/0052 Embedding of the watermark in the frequency domain
• G06T 2201/0053 Embedding of the watermark in the coding stream, possibly without decoding; Embedding of the watermark in the compressed domain
• G06T 2201/0061 Embedding of the watermark in each block of the image, e.g. segmented watermarking
• G06T 2201/0062 Embedding of the watermark in text images, e.g. watermarking text documents using letter skew, letter distance or row distance
• G06T 2201/0063 in relation to collusion attacks, e.g. collusion attack resistant
• G06T 2201/0064 for copy protection or copy management, e.g. CGMS, copy only once, one-time copy
• G06T 2201/0065 Extraction of an embedded watermark; Reliable detection
• G06T 2201/0081 whereby both original and watermarked images are required at decoder, e.g. destination-based, non-blind, non-oblivious
• G06T 2201/0083 whereby only watermarked image required at decoder, e.g. source-based, blind, oblivious
• G06T 2201/0201 whereby only tamper or origin are detected and no embedding takes place
• G06T 2201/0202 whereby the quality of watermarked images is measured; Measuring quality or performance of watermarking methods; Balancing between quality and robustness
• G06T 2201/0203 whereby the image with embedded watermark is reverted to the original condition before embedding, e.g. lossless, distortion-free or invertible watermarking
• G06T 2201/0601 whereby calibration information is embedded in the watermark, e.g. a grid, a scale, a list of transformations