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Novel reversible difference expansion watermarking algorithm for triplet
Sachnev Vasiliy,Kim Hyoung Joong,Hana Know 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
We presented novel reversible watermarking algorithm for images based on new data hiding shceme with simplified location map. Proposed reversible watermarking algorithm uses integer transform for triplet of pixels proposed by Alattar, which allows hiding 2 bits pear each triplet. Proposed simplified location map has considerable small size under same other conditions. Thus, capacity of proposed data hiding technique is significantly higher compare to impoved difference expansion method for triplets proposed by Alattar. Proposed method allows embedding data without location map compression, so copmutation is fast and implimentation is simple.