How i find duplicate photos from computer using c++(mfc) ?

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I want to find duplicate photos from PC for that i have to write code in c++ MFC or you can suggest me an any algorithm ?

What I have tried:

I tried using getpixel,but it is taking time for multiple images.

Posted 12-Feb-16 2:40am

Rais Shaikh

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Jochen Arndt 12-Feb-16 8:49am

What do you mean by duplicate?

If you mean identical, you can use a binary file compare.

If you mean similar, you have to use some kind of image comparing algorithm.

Special cases may be be same origin but modified (resolution, clipped portion, manipulated) or converted to another image format.

If the image files contains meta data like EXIF, you may use that too.

Albert Holguin 12-Feb-16 9:54am

You should probably post this as a solution...

Jochen Arndt 12-Feb-16 10:02am

Done.

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Jochen Arndt · Accepted Answer · 2016-02-12T04:02:00

Solution 1

This depends on the definition of "duplicate".

For identical image files you can use a binary file compare.

For similar images you have to use some kind of image comparing algorithm.

Special cases may be be same origin but modified (resolution, clipped portion, manipulated) or converted to another image format.

If the image files contains meta data like EXIF, you may use that too.

Posted 12-Feb-16 4:02am

Jochen Arndt

Comments

Albert Holguin 12-Feb-16 10:03am

+5

Rais Shaikh 16-Feb-16 0:36am

Can you suggest me any image comparing algorithm thanks ?

Jochen Arndt 16-Feb-16 2:46am

Sorry. I can't because I have never used one. Just search the web for "image comparison algorithm".

Rais Shaikh 16-Feb-16 23:31pm

Thanks !!