Fast comparison two bitmap

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C#

Hi
How compare two large bitmap(1920x1080 and many) very fast? I need algorithm or articles or dll(maybe pay)

Posted 12-Jun-13 7:31am

Fess59

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Dave Kreskowiak · Answer 1 · 2013-06-12T07:43:00

Solution 1

You'll have to define precisely what you mean by "compare". What kind of data are you looking to get out of the comparison and what are you doing with it?

Posted 12-Jun-13 7:43am

Dave Kreskowiak

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Fess59 13-Jun-13 1:38am

I need to find the changes in the image. We use the split screen regions (16x16 or 32x32) and per-pixel comparison of the insecure memory, but it is slow (If the image is larger 1920x1080). Any ideas or ready reshieniya able to help us (probably paid the library)?

Dave Kreskowiak 13-Jun-13 8:34am

And you want to do this at video frame rates?? You're going about this all wrong. What you're doing will never be fast enough. The problem is that you're trying to find the differences between two frames, which takes forever. You need to be tracking the changes AS THEY HAPPEN from frame to frame. That means a component of your app must be in the drawing stack so that you get the drawing commands sent through you. You're creating a video driver to do this!

Look into a VLC library if your'e going to do video capture or remote desktop applications, such as http://libvlcnet.codeplex.com/