how to make two images equal?

I have two images having same object in those. I am applying chain code on those images but my object in both the images is not at same position, I mean same object is little bit far away from boundary. How can I make these two images equal so that chain starts from same pixel position and results may not vary significantly. Is there any way to solve this problem? Thanks in advance.

[Image Analyst]

image2 = image1;  % Now they're equal.

[Chad Greene]

I think Image Analyst is saying there is not enough information to solve or even understand your problem. Can you upload some example images to show exactly what you are describing?