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I have a black-and-white shape form, like the ones presented below, and wish to compare it and find the closest match in a database of similar images. I looked into Perceptual Hashing but that doesn't seem to work for low-resolution and mono-coloured images.

(1) Shape form 1 (2) Shape form 2

What other methods are applicable in order to make such comparisons?

chris05
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  • siamese networks are used for face or finger print verification and used in exactly the same way. – Zaw Lin Feb 10 '15 at 11:02
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    this http://stackoverflow.com/a/22879053/2521214 might help, also read this http://stackoverflow.com/a/27588077/2521214 for some ideas. are your images rotated or always in defined (the same) position/orientation. Are they always polygon like... (outline only) has the outline holes? add as much information as you can... – Spektre Feb 10 '15 at 12:57

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