image scrambling using arnold scramble

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kush
kush 2012-4-2
评论： Manpreet 2015-5-1
does anyone knows about arnolg's image scrambling ? i am scrambling an image using arnold scramble as :
wname='_copyright.bmp';
I=imread(wname);
[rown,coln]=size(I);
ct=input('Enter Key');
for inc=1:ct
for row=1:rown
for col=1:coln
nrowp = row;
ncolp=col;
for ite=1:inc
newcord =[1 1;1 2]*[nrowp ncolp]';
nrowp=newcord(1);
ncolp=newcord(2);
end
arnold(row,col)=I((mod(nrowp,rown)+1),(mod(ncolp,coln)+1));
end
end
end
can anyone plz tell how to get back original image by applying reverse arnold scramble ???

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