Arnold图像置乱Matlab代码 ％％ -------------------------------------------------------------------- ％％ ％ Function: Arnold图像置乱 ％ Arnold: x =(x+y) mod N, y =(x+2y) mod N ％ 变换周期(N,M): (128,96),(256,192),(512,384) ％ Argument: dPSNR: 置乱后PSNR ％ outIm