Encrypt using images using matlab

Pick some text or image file(grayscale) of your choice, and a colored RGB picture then, do the following:

a) Hide this file into the colored picture by replacing its least significant bits of each color in every pixel with your file data. Try to use a minimum number of LSB bits of the colored picture such that changes are unnoticeable.

b) Restore this hidden picture from the carrier picture.

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

[sozie Ahmad]

Thank you for your help.