A New Algorithm For Watermarking Based On DCT and Chaotic Scrambling
This paper presents a robust image watermarking method in discrete cosine transform ( DCT) domain based on chaotic sequences encryption. Exploiting some characteristics of Human Visual System (HVS) and DC(Direct Current) components having much larger perceptual capacity than any AC (Alternating Current)components, watermark is embedded into the DC components of the host image. First, we scramble the watermark image to avoid the block effect. Then we split the host image and the scrambled watermark image into 8×8block respectively, and the scrambled watermark is embedded into the DC components of the host image. The experimental results show that the embedded watermark is invisible and robust against noise and commonly used image processing methods such as Gaussian, JPEG compression, Median filtering etc.
components:watermarking DCT chaotic sequences image scrambling
Yanling Wang Xiuhua Ji
School of Computer Science and Technology, Shandong Economic University Jinan, 250014, China
国际会议
第四届国际计算机新科技与教育学术会议(2009 4th International Conference on Computer Science & Education)
南京
英文
1957-1961
2009-07-25（万方平台首次上网日期，不代表论文的发表时间）