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Index › Programming Questions & Help › Other Libraries › Singular value decomposition - where do I begin
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Singular value decomposition - where do I begin? (Read 614 times)
Xig
Singular value decomposition - where do I begin?
Nov 7th, 2009, 3:53am  
Hi everyone

I have some x,y co-ordinates for points captured by a webcam, but I need to warp them to a rectangle on screen. I have four corner co-ordinates from the webcam too.

I've been told to look into homographies and SVD but I have no idea what this is or how to go about it. My Google-fu returns very little.

Can anyone please recommend a Processing library, or some example code or a tutorial, or anything really, on how to go about this?

Edit: I've discovered PVector and matrixMath ... am I getting close?

Many thanks!
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Classiclll
Re: Singular value decomposition - where do I begin?
Reply #1 - Nov 7th, 2009, 6:32am  
mapping from convex quadrilateral(webcam) to rectangle(screen) is implimented in
http://www.geocities.jp/classiclll_newweb/JonnyLeesBoardEmulator/applet/index.html
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