How do I move a foreground image onto another part of a background image?

I'm writing a script that lets you input a background image and a foreground green screen image, and then adds the foreground image onto the background image, without the green screen. I have a function which tests if a pixel is green and gives an answer of 1 or 0, and a second function calls the previous function and stores the 1's and 0's in a matrix which can then be used as an image mask. The script correctly adds the foreground image to the background image and can also scale the foreground image, but I am unsure how to move the foreground image onto a different part of the image. I know how to use the ginput() to specify the pixel I want the image to move to but I don't know how to actually move the image to that spot.

Thanks, Belle.

Answer 1

[Image Analyst]

See this link, especially Professor Tearle's blog on green screen.

http://www.mathworks.com/matlabcentral/answers/160135-masking-and-removing-green-pixels