水印提取时不需要原始文档和原始水印，通过块校验和海明校验可将破坏的水印比特位进行恢复。

Watermarking can be extracted without original document and original watermarking information. When the watermarking bit is destroyed, block checkout and hamming checkout are used to recover it.

youdao

水印提取时不需要原始文档和原始水印，通过块校验和海明校验可将破坏的水印比特位进行恢复。

Watermarking can be extracted without original document and original watermarking information. When the watermarking bit is destroyed, block checkout and hamming checkout are used to recover it.

youdao