A Color Images Steganography Method by Multiple Embedding Strategy Based on Sobel Operator
In this paper, we propose a color images steganography. Firstly, because modification of pixel of image edges is less sensitive to human eye, the edge or texture in one plane is detected by Sobel edge detection operator and the largest certain number of gradients are selected as embedding positions. Secondly, because of strong relevance in gradient among R, G, and B planes, the corresponding LSB (Least Significant Bit) of pixel values to hide the secret data in other planes is modified. Finally, combine the stego-planes and restore the color image. Furthermore, multi-times embedding can be adapted to obtain high data capacity. Experimental results show that stego-images keep good quality and high capacity. For example, there is no noticeable degradation after three times hiding process, the average PSNR is about 45db and data capacity is 6.3bpp. The method also can extract the secret data accurately.
multiple embedding steganography color images gradient
Li Li Bin Luo Qiang Li Xiaojun Fang
Hangzhou Dianzi University, Institute of Graphics and Image Hangzhou, China Anhui University, school of Computer Science and Technology HeFei, China
国际会议
武汉
英文
799-802
2009-11-18（万方平台首次上网日期，不代表论文的发表时间）