在Matlab开发环境下，实现将输入的随机字符串以随机序列的方式嵌入载体图像中，并很好的保证了水印的不可见性，同时也实现了水印的盲检测并成功提取出输入的字符。-In Matlab development environment, to achieve the random string input by random sequence was embedded in the carrier image, and it guarantees the invisibility of the wate