Improved lossless robust image watermarking algorithm based on block's difference
Deng Xiao-hong · Jisuanji gongcheng yu sheji · 2013
To deal with the problems in lossless robust watermarking based on image block's difference,an adaptive algorithm is proposed.In the embedding procedure,the Huffman coding is employed to reduce the watermark's overhead such as the marked information of image's block,and increases the actual embedding capacity.In the extract procedure,the K-means clustering is utilized to resolve the overlap problem between 1-bit zone and 0-bit zone,and enhances the extracting accuracy.Experimental results show that,compared with previous works,the performance of the proposed method is significantly improved in terms of capacity and robustness.