在提取水印时，不需要原始图像，完全实现了盲水印提取。
The blind watermark was realized as the original image don't be needed when extracting watermark.
在提取水印时，通过计算相关度，从而实现了不使用原载体图像就能提取水印的盲算法。
Through calculation of the correlation, it is successful to extract the watermark algorithm blind when there are not original vector images.
实验表明该算法能够在模型中嵌入大容量的水印消息，并减少了提取水印的时间。
Results show blind algorithm can embed high-capacity watermarking into models, and reduce the time of extracting watermarking.
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