VIDEO IMAGE TRANSFORMING METHOD AND APPARATUS

摘要

An image transforming method and apparatus divides an input image into a plurality of original minute rectangular segments. Calculations are performed to determine the positions of the four apexes (Q1-Q4) of a new minute rectangular segment (SB) to which each of the original minute rectangular segments (SA) is to be transformed. The new minute rectangular segment (SB) is divided by a diagonal line into two triangular sections. The coordinates on the input image correspond to the respective pixels in each of the triangular sections by interpolation using two of the sides of the triangular section except for the side made by the diagonal line used in dividing the new minute rectangular segment. the input image data are mapped on the corresponding output image based on the obtained coordinates.