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Spread Spectrum Watermark Based on Wavelet Transform for Still Digital Image
被引：0
作者：
Shao Hai-mei 1
2. School of Electronic Information
3. National Laboratory for Information Engineering in Surveying
机构：
关键词：
digital watermark;
spread spectrum techniques;
wavelet transform;
D O I：
暂无
中图分类号：
TP309 [安全保密];
学科分类号：
081201 ;
0839 ;
1402 ;
摘要：
The proposed method inserts a watermark into the spectral components of the data using techniques analogous to spread spectrum communications, hiding a narrow band signal in a wideband channel. The watermark is difficult for an attacker to remove. It is also robust to common signal and geometric distortion such as JPEG compression, cropping and scaling. In addition, the watermark can be extracted accurately without source host image at the receiver.
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页码：203 / 208
页数：6
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