is Arnold transform for color image and for grey/binary image different?
1 view (last 30 days)
Show older comments
i need to scramble a rgb color image. now i want to know is Arnold transform for color image and for grey/binary image different? it will be great if any one can refer the appropriate code from file exchange
0 Comments
Answers (1)
Walter Roberson
on 5 Oct 2015
The 3D version is different; see http://www.mathworks.com/matlabcentral/answers/167213-3-dimensioal-arnold-cat-map
However you could reshape() your color image to be rows by (cols * 3), and then pad the result out to square and apply the arnold transform to that.
3 Comments
Walter Roberson
on 5 Oct 2015
There is no such thing as a 2D rgb color image in MATLAB. In MATLAB, 2D images can be pseudocolor ("color mapped"), or you can have 3D arrays which are RGB "true color". If you have a 2D array of data that represents color then you should just do a normal arnold transform on it and apply the colormap any time you want to display the result. If you have a 3D truecolor array, then you could divide it into channels and apply the arnold map to each, or you could reshape to have 3 times as many columns and apply the arnold map to that, or you could apply the 3D cat map.
See Also
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!