image steganography-hiding pixel values

I want to hide one .bmp image into another .bmp image.If the pixel value match of the two images then I want to hide the pixel value and store the positon in an array.Can you please tell how to do this.

Answer 1

[Image Analyst]

See section 23.3 for tons of methods: http://iris.usc.edu/Vision-Notes/bibliography/contentschar.html#OCR,%20Document%20Analysis%20and%20Character%20Recognition%20Systems

Pick one and code it up in MATLAB. I gave one method today to someone: http://www.mathworks.com/matlabcentral/answers/36890-image-scrambling-code-in-matlab It (the bitplane/LSB method) is probably one of the most simplest, weakest, most primitive methods out there though.