说明：  嵌入水印后的图像与原 始图像在视觉效果上几乎一样,只在亮度上稍有不 图6 　仿真实验结果 图7 　仿真实验结果 同,提取出的水印图像与原图像基本一致。
(embedded watermark image with the original image in the visual effects are almost identical, only slight brightness on the map six simulation results Figure 7 with the simulation results. extract the watermark image with basically the same as the original image.)