Hi to All...
I am doing final year Mca.. and for final year project.. my topic is as title..
I have an Image at hand..(not smiling)
I have another two image..
1.Bigger image containing the image at hand as a part of the image
2.Same as the image at hand with (some modification like smiling)
Now i want to do..check for presence in first case.. matching in second case..

My approach:
I will find edges for all the given images-to reduce the amount of data to check

help me to proceed logically...
Expecting your help..
Thanks in advance.. :)