It considered the spatial information of images (which was often neglected), and segmented an image following two steps: color quantization and spatial segmentation.
该方法充分考虑到图像的空间信息,对图像的分割采用两个步骤:颜色量化和图像空间分割。
2
The watermark was embedded in the wavelet domain using the mean quantization method. This method can be used to detect the distortion both in spatial and frequency domain.