3 Dimensioal Arnold Cat Map

2014 12 19
0 个回答
更新时间：2018 1 13
16 次查看（30 天）

0 个投票

Hi..
I m going to use 3 D Arnold Cat Map For image Scrambling in my project.. The matrix for transformation is as follows
Here x' & y' are the locations of the pixel after mapping, x & y are the locations of the pixel before mapping, z is the intensity/color code of image before mapping, z' is the intensity/color code of image after mapping,
z'=(c*x+d*y+z) mod M. I want matlab code for this problem... I can't get proper shuffling... Pls help me.. Thank u..

3 个评论
显示 1更早的评论 隐藏 1更早的评论

Geoff Hayes
Geoff Hayes 2014-12-19
Kalai - what have you tried so far? Please describe the problems you are having with the shuffling.
Kalai S
Kalai S 2014-12-22
编辑：Walter Roberson 2015-10-5
Hi Sir,
This function is used to shuffle the image
function X = three_d_catmap(Y)
p = size(Y,1); % get the number of pixels on each side
X = zeros(size(Y)); % make space for X (all zeros to start)
for i = 1:p % loop through all the pixels
for j = 1:p
newi = mod(((i-1) + (j-1)),p) + 1; % get new i coord (a+b) mod p
newj = mod(((i-1) + 2*(j-1)),p) + 1; % get new j coord (a+2b) mod p
X(newi,newj,:) = mod((4*(i-1)*1*(j-1)+Y(i,j,:)),p) + 1;
end
end
X = uint8(X); % this may have to be adjusted depending on the type of image
This script is used to shuffle the images for 65 iterations...
X = imread('lena.jpg');
for i = 1:65
X = three_d_catmap(X);
figure(1);image(X);title(i);
refresh;
pause(0.0001);
end
I cannot get proper shuffling like 2 D ACM..
If there is an error in my code,please notify it ..
Thank U Sir.
Rajasekar SRC MCA
Rajasekar SRC MCA 2018-1-13
how to encrypt in Arnold Cat map with 3d image coding

请先登录，再进行评论。

请先登录，再回答此问题。

回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Image Transforms 的更多信息

产品

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by