图像混沌加密算法，利用Arnold映射置乱加密

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clear allclose allclc imgimreadElenajpg subplot131imshowimgtitle原图 h wsizeimg 置乱与复原的共同参数 n10 a3b5 Nh 置乱 imgnzeroshw for i1n for y1h for x1w xxmodx1by1N1 yymodax1ab1y1N1 imgnyyxximgyx end end imgimgn end subplot132imshowimgntitle置乱后的图像 复原 imgimgn for i1n for y1h for x1w xxmodab1x1by1N1 yymodax1y1N1 imgnyyxximgyx end end imgimgn end subplot133imshowimgntitle复原后的图像 ......