The figure shows a nonlinear warp, which maps a regular grid onto a cylinder or a hemisphere. The effect is the same as wrapping a flat image around an object and viewing it from afar. The image transformation is a function of the radius of the cylinder or hemisphere.
L. G. Shapiro and G. C. Stockman, "Matching in 2D," Computer Vision, New Jersey: Prentice-Hall, 2001 pp. 364.
Wolfram Demonstrations Project
Published: March 7 2011