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论文类型：会议论文

发表时间：2008-10-12

收录刊物：EI、CPCI-S、Scopus

页面范围：12505-12508

关键字：DWT; DCT; color components; color image; sub-sampling

摘要：This paper combines the visual characteristics of low frequency sub-image of DWT and the ability of DCT to remove correlation between DWT coefficients. By doing this, this paper improves a blind DCT watermarking algorithm to get a new color image digital watermarking schema based on DWT and DCT. The schema applies a self-adapted color component choosing strategy; Preprocesses the watermark by Logistic chaotic encryption; Applies the DCT to low frequency sub-image of DWT to get rid of coefficient correlation; In addition to that this schema extract strategy is blind by using sub-sampling technique. According to simulation results, this watermarking schema is robust under common attacks especially the compression attacks.