No idea Image comparison and matching software

[Access Denied]

I'm in need of the above. I want to go through all my pictures and delete any duplicates. Plus there's the fact that I'm almost 100% sure I've got the picture I posted in the Boob thread on my computer somewhere. Sans Photoshop. However, with almost 20,000 photo's to go through, the thought of doing either task manually isn't exactly filling me with joy. Can anyone recommend a good program?

 

[caLLous]

I've always used Duplicate Photo Finder; it does exactly what you want. It will go through, comparing everything with everything, and give you a percentage match.

 

[Access Denied]

Perfect. Much obliged! Though I don't already have that picture on my computer. Where on Earth did I see it?

 

[caLLous]

Try a reverse image search on google images.