Image-adaptive and Robust Digital Wavelet-domain Watermarking for Images |
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引用本文: | ZHANG Jianxun ZHANG Jiawan SUN Jizhou. Image-adaptive and Robust Digital Wavelet-domain Watermarking for Images[J]. 通讯和计算机, 2005, 2(1): 57-63 |
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作者姓名: | ZHANG Jianxun ZHANG Jiawan SUN Jizhou |
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作者单位: | [1]Electronic & Information Engineering School, Tianjin University. Tianjin 300072. China [2]School of Computer Science & Engineering, Chongqing Institute of technology, Chongqing 400050, China |
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基金项目: | Acknowledgement: This work is supported in part by NNSF Grant 60373061 and the Science Council Foundation of Chongqing, China Grant 2002cc23. |
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摘 要: | ![]() We propose a new frequency domain wavelet based watermarking technique. The key idea of our scheme is twofold: multire solution representation of image and odd-even quantization embedding/extracting watermark. Because many complementary watermarks need to be hidden, the watermark image designed is image-adaptive. The meaningful and complementary watermark images was embedded into the original image (host image) by odd-even quantization modifying coefficients, which was selected from the detail wavelet coefficients of the original image, if their magnitudes are larger than their corresponding Just Noticeable Difference thresholds. The tests show good robustness against best-known uttacks such as noise addition, image compression, median filtering, clipping as well as geometric transforms. Further research may improve the performance by refining JND thresholds.
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关 键 词: | 图像处理 数字水印 微波传送 数字转换 |
Image-adaptive and Robust Digital Wavelet-domain Watermarking for Images |
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Abstract: | ![]()
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Keywords: | Image Processing Digital Watermark Discrete Wavelet Transforms JND |
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