这是Arnold变换 and 反变换的源代码.算法是经过改正的，运行可靠。在图像处理过程中用于图像预处理。-This is the Arnold transform and inverse transform of the source code. Algorithm is the result of correct and reliable operation. In the image processing for image preprocessing.

关于数字水印嵌入时处理水印的源代码，采用猫脸变换对水印图像进行预处理 -Be dealt with on the digital watermark embedding watermark source code, using a cat face on the watermark image pre-processing transformation