A dual watermark algorithm based on DCT and LSB
Jianping Lv · 2010
In order to increase the information embedded in a vector image,a color image watermarking algorithm based on DCT and LSB is proposed.First,the vector image is decomposed into R,G,B,three color components.R and G components are embedded watermark.For the first image watermark scrambling encryption,it will be embedded into the 8 x 8 partitioned optimal of R component after transformation.With the watermark lowest effective method in spatial domain,the watermark on G component will be embedded to G pixel values of the lowest effectie.Experiments show that,this algorithm is effective to improve the embedding quantity,it have good robustness to such attacks as noise and compression.