projective-geometry

What is the difference between the fundamental, essential and homography matrices?

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Without any extra assumption on the world scene geometry, you cannot affirm that there is a projective transformation between the two views. This is only true if the scene is planar. A good reference on that topic is the book Multiple View Geometry in Computer Vision by Hartley and Zisserman. If the world scene is … Read more

proportions of a perspective-deformed rectangle

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Here is my attempt at answering my question after reading the paper Zhengyou Zhang , Li-Wei He, “Whiteboard scanning and image enhancement” http://research.microsoft.com/en-us/um/people/zhang/papers/tr03-39.pdf I manipulated the equations for some time in SAGE, and came up with this pseudo-code in c-style: // in case it matters: licensed under GPLv2 or later // legend: // sqr(x) = … Read more

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