My project

I need to do Digital Image Encryption using number theory on MATLAB. if someone know plz help.

[Jan]

If someone knows, that you need to do Digital Image Encryption?!

If you want others to assist, it is a good idea to post all relevant information. A good point to start is: http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

For the non-experts it would be helpful, if you explain, what "Digital Image Enryption" is - does it differ from standard data encryption using e.g. AES and is there and "analog image encryption" also?

[Walter Roberson]

NTSC signal representation is messy enough that some people refer to it as analog image encryption ;-)