Spatial Domain Watermarking Research Based on the Zigzag Scrambling

A new blind watermarking method for robust spatial-domain digital image in this paper.Zigzag transformation is utilized to scramble watermark and general a new watermark.Then,the watermark is embedded in bigger contrast regions of image by a quantization strategy.This scheme can be adapted to various texture images,and the algorithm of extracting the watermark doesn’t need the original im age.Experimental results show that the proposed method is robust for some image processing operation such as salt and pepper noise.