分析了用户数量和嵌入深度对含印图像质量和提取水印质量的影响。
It analyses the influence of user number and embedding depth on the quality of watermarked images and extracted watermarks.
提高了防伪纸张上设置的水 印条码的精度，使各水印条码宽窄一致，携带的编码信息准确；
This invention improves the precision of the watermark bar code on the false proof paper, which makes the width of each watermark bar code equal, and the portable coding information is exact;
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