3D special effects system

摘要

A video special effects system for warping a flat input image by mapping it onto a curved surface in which the user defines a curved surface by specifying a number of points on the surface. A number of points in the address map of the input image are transformed onto the address map of the output image. These points on the output address map are then used to generate coefficients for portions of the output address map defining points on the input address map as a function of the points on the output address map within each portion of the output address map.