用调幅法在彩色图像中嵌入秘密信息的算法。人眼对蓝色较为不敏感，并且不易察觉图像高灰度(Luminance)区域和高频区域的变化，因此，秘密信息被嵌入到图像的蓝色通道，并且秘密信息的嵌入强度与该点的灰度值成正比。这样，秘密信息所引起的视觉效果上的改变是很小的。-The algorithm of the secret information embedded in color images using amplitude modulation method. The human eye is not sensitive to blue more image in grayscale (Luminance) and difficult to detect changes in regional and high-frequency region, secret information is embedded into the image of the blue channel, and the embedding strength of the secret information with the point gray value is proportional to. In this way, the visual effects caused by the secret information on the change is very small.