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Homography

PostPosted: Fri Apr 03, 2009 7:49 am
by mrtrombone
Hi,

I'm not sure if this should be in the Image Processing and Computer Vision board, so, sorry if it should be posted somewhere else. Anyways, I was looking through the AForge.Math (1.7) classes and noticed that there isn't too much support with matrices and all that. Does anyone know of some good Math libraries in C# that I can use? I'm looking to map a captured projected image with the computer. (I.e., a camera captures a projected image on the wall or something, and I want to map a section of that captured image to my laptop screen.) Or better yet, if there's already a math library out there that can compute the homography matrix (with known image and screen points as inputs), that would be great!

Thanks!
Andy

Re: Homography

PostPosted: Fri Apr 03, 2009 9:35 am
by andrew.kirillov
Hello,

If you are looking for .NET math library, then you may try dnAnalytics, which seems to be nice.

mrtrombone wrote:I'm looking to map a captured projected image with the computer. (I.e., a camera captures a projected image on the wall or something, and I want to map a section of that captured image to my laptop screen.)

I think all you need is Affine Transformation. Here is one post from another user, who found some C code and put that into C#. There you will find some links ...