the problem during 3Dreconstruction with opencv

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I'm a postgraduate researching the 3D-reconstruction with opencv.Suppose I have get the 2D-points from left and right cameras and want to calculate the 3D-point(X Y Z).In the book I know using the cvperspectivetransform(or someone say cvreprojectimageto3D) ,but I want know how the world coordinate comes(It seems nobody built it)?

Posted 28-Dec-11 16:12pm

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BrainlessLabs.com 29-Dec-11 0:06am

Are you talking about some example in the book "Learning OpenCV"?

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JackDingler · Answer 1 · 2011-12-28T18:39:00

You have four 3D points in your problem.

You have the two camera points and the 2D points on the plane that represents the window coords. there should be a method that gives you the 3D point, on the window plane where the 2D point is found.

That is all you need to calculate two 3D lines.

Then find the intersection...

Jack Dingler