Can you please help me in finding the ratio image of two images of different wavelength using matlab?

Can you please help me in finding the ratio image of two images of
different wavelength using matlab?

References

Reference NO 1

http://www.mathworks.com/matlabcentral/newsreader/view_thread/149300

Reference NO 2

http://en.wikipedia.org/wiki/Chromatic_aberration

Reference NO 3

http://www.optics.rochester.edu/workgroups/cml/opt307/spr05/chris/

Reference NO 4

http://www.roipac.org/AskQuestion

Reference NO 5

http://www.dinolite.us/support/faq

Reference NO 6

http://evolvestar.com/want/matlab-size-image-trying-find-size

Reference NO 7

http://askthephysicist.com/ask_phys_q%26a.html

Reference NO 8

http://www.andor.com/pdfs/literature/Andor_Revolution-XD_Brochure.pdf