The watermark can be retrieved by using either optical or digital Fourier transform on halftoneimages containing the watermarked information.
水印的提取过程只需对含有水印信息的半色调图像进行光学或数字的傅里叶变换即可完成。
2
The main problem to research halftone digital watermarking is how to ensures the robust of watermark and the vision of halftoneimages at the same time.
半色调图像数字水印研讨的主要难点是如何在保证嵌入水印健壮性的前提下绝可能地保证宿主图像的视觉后果。
3
The result of experiments show that color C-V method is far better than traditional methods when it transacts halftoneimages within fuzzy edges and severe pollution of noise.