can any one evaluate my program . which i have written for image fft?

Dear all, By referring matlab central discussion between Mr. Paul T John and Mr. Rick Rosson I have written a matlab program for my image analysis (the program code attached here). But, i don't know it is correct or not.. and one more doubt is still i didn't get clarification of how to get wavelength of a wave. So here i am attaching a sample image which i was using in that program and the program code also. can any one evaluate it and can you give me some constructive comments on it?

Thanking you,

With regards,

Sivakandan M National Atmospheric Research Laboratory, India.