中文说明：基于dft的水印代码，水印注入、提取、防攻击测试
English Description：
Watermark code based on DFT, watermark injection, extraction, anti attack test
Implementation of DFT watermark with matlab code
水印提取 watermarking-test watermark attack-watermarking attack-watermark
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中文说明：基于dft的水印代码，水印注入、提取、防攻击测试
English Description：
Watermark code based on DFT, watermark injection, extraction, anti attack test