When watermarking is embedded, it is modified coefficients by the parity quantization. When watermarking is detected, it is able to achieve blind extracted successfully.
水印嵌入时通过奇偶量化的方法修改系数,水印提取时可进行盲提取。
参考来源 - 基于变换域和HVS的数字水印算法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Finally, adjust the parity of the quantization coefficients to embed watermark.
最后，调整均匀谱处理后的量化系数奇偶性，实现水印嵌入。
A variable step uniform quantization(VSUQ) sum-product algorithm(SPA) was developed to reduce the hardware complexity of low-density parity-check(LDPC) code decoding.
为降低低密度奇偶检验码译码的硬件实现复杂度，提出了一种可变步长均匀量化“和积”译码算法。
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