Is there anyway ot compare two different images to see how similar they are?

TheKidd88's Avatar, Join Date: Jun 2007
Light Poster
Basically, I want to create a program that will look at two 3d images and see how similar they are, maybe by seeing how many points of that image are the same. The image files I am working with are vtk. Is there anyway to this, and in what language?
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DaWei's Avatar, Join Date: Dec 2006
Team Leader
I would recommend looking into histogram intersection distances. Use a language you're competent with. You'll be looking at stuff like this:

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TheKidd88's Avatar, Join Date: Jun 2007
Light Poster
Wow, I have no idea what that is. I guess I'll start reading up on histograms. k thanks.