how to merge or super impose two images in matlab

hi, i'm presently working on secure image transmission system using mosaic image. I want to know how to super impose an image over another and it appears as eithe of the two images. And then to recover the original two images at the receiver side. Kindly help me out at the earliest as project is to submitted very shortly.

Answer 1

[Image Analyst]

Try imfuse(), imshowpair(), or use an overlay like here:

http://blogs.mathworks.com/steve/2009/02/18/image-overlay-using-transparency/

http://www.mathworks.com/matlabcentral/answers/104889-how-to-overlay-a-foreground-image-over-a-background-image

Answer 2

[yuanyuan LI]

hi, i'm presently working on secure image transmission system using mosaic image.I want to know if you have source code of “Very Fast Watermarking by Reversible Contrast Mapping”.Please help me.

[Image Analyst]

I haven't gotten a response from Chandra in 15 months, so don't hold your breath. It doesn't even look like she worked on watermarking.

[yuanyuan LI]

ok,thank you.