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How to find the original from a cropped image

Hi guys. I want to make an application dealing with image processing, but I don't know which to read first. The idea is that I want to find the original from the cropped image. For example, upload this imageenter image description here

I want to discover this enter image description here

edit: More precisely. I will have a database full of images and I want to find the original from the cropped one. What algorithms can I use for this? I will be using C ++ or C #. Still have not decided.

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Most image finder applications, I THINK to use some sort of Vulnerability Sensitivity string , I don't know what language you are using, but I am a Ruby developer and there is a gem called Recommendify that could do the magic.



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I don't think there is a way to do this. The picture is already cut off, like a cut off hand, you cannot return the real hand. This is only possible when you are in a separate application, all you do is "UNDO" .. CTRL-Z



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