DCT-Based Zero Replacement Reversible Image Watermarking Approach

淡江大學機構典藏 > 工學院 > 資訊工程學系暨研究所 > 期刊論文 > Item 987654321/59890

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题名:	DCT-Based Zero Replacement Reversible Image Watermarking Approach
作者:	Chen, Chien Chang;Kao, D. Sheng
贡献者:	淡江大學資訊工程學系
关键词:	Reversible watermarking;DCT;Quantization
日期:	2008-11
上传时间:	2013-06-07 10:47:21 (UTC+8)
出版者:	Kumamoto: ICIC International
摘要:	Reversible watermarking recovers an original image from a watermarked image by extracting the embedded watermarks. This work presents a reversible image watermarking approach that works on quantized DCT coefficients, implying that the original quantized image can be recovered perfectly after watermark extraction. The concept of zero replacement reversible watermarking is presented. Two parameters adjustment rules, ZRE and ZRX, are first proposed to embed and extract one bit to DCT coefficients, respectively. Additionally, the CA rule is presented to prevent confusion during embedding and extraction. Watermark embedding and extracting algorithms based on these three rules are then proposed. Experimental results indicate that the quality of watermarked image is very good, and that the proposed approach can also identify maliciously attacked regions efficiently. The proposed approach is also compared with other watermarking methods, demonstrating that the proposed approach works well.
關聯:	International Journal of Innovative Computing, Information and Control 4(11), pp.3027-3036
显示于类别:	[資訊工程學系暨研究所] 期刊論文

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