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A Visual Model Weighted Digital Watermarking Algorithm Using Block-based DCT
Author(s): ZHAO Chun-hui, WANG Xiao-hui, SUN Bing
Pages: 10-
12
Year: 2001
Issue:
5
Journal: APPLIED SCIENCE AND TECHNOLOGY
Keyword: digital watermark; visual model; DCT transform;
Abstract: ln this paper,a new method was proposed to hide watermark image in images by block-based DCT techniques in conjunction with the visual model for compression.According to the masking information generated by bit decomposition of the watermark image,watermark information was embedded into the mid-frequency DCT coefficient.The simulation experiments show that this robustness method can survive image cropping and sharping,and get better results.
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