Date: 07/08/05 (Algorithms)    Keywords: no keywords

This feels like something I should know, but... I don’t.

How does one map Cartesian planar points to a 2-d curvilinear coordinate space? Or the reverse?

My specific problem is this: Say I have an image with translational symmetry, but along a pair of open curves. Once I identify the curves, I want to ‘unwarp’ the image so the translation is along scalar orthogonal coordinates. (So I have to map the matrix that represents the original image into one that represents the new image. I'm working with MATLAB -- in case anyone knows of some quick tricks in it.)

Any suggestions or pointers will be appreciated. Thanks.

Source: http://www.livejournal.com/community/algorithms/58634.html