Abstract
In this paper the large-capacity dynamic multiple watermarking algorithm based on Sudoku was proposed with two bit/pixel embedding capacity.The original image was divided into M×N pixels non-overlapping areas.Different watermarks with size of 2 M×N pixels were embedded into the corresponding areas.If the watermarked area was tampered,the watermark in this area could not be extracted correctly.At any time,any watermarks can be embedded into any area as long as the areas are non-overlapping.The experimental results show that the proposed algorithm has a larger watermarking embedding capacity and higher accuracy of tampered localization.
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