Patent ID: 6016152
Filing Date: 2000-01-18
Classification: G06T

Abstract:
A process for obtaining a value for a pixel in a destination image produced by non-uniform transformation of a source image, comprising the steps of:selecting a reconstruction filter;applying an affine transformation determined by the non-uniform transformation on an area centered on the pixel in the destination image to define at least two axes in a source image space;determining a linear transformation between an area in the source image space and the at least two axes, wherein the linear transformation corresponds to the non-uniform transformation and represents the shape of the area in the destination image transformed by a transformation defined according to the inverse of the non-uniform transformation, wherein the area is centered around a center of the at least two axes;modifying the selected reconstruction filter using the linear transformation to create a modified reconstruction filter with a support region;identifying which pixels from the source image are included in the support region of the modified reconstruction filter; anddetermining the value for the pixel in the destination image from pixel centers of the source image included in the support of the modified reconstruction filter.