Patent ID: 8471853

Claim:
A reconstructable geometry mapping method comprising: extracting geometry information of a plurality of occluding geometry shapes of an object's front-face with respect to a light source's point of view; performing a consistency test on a testing pixel so as to determine an occluding geometry shape corresponding to the testing pixel from the object's front-face among the plurality of occluding geometry shapes; reconstructing a depth value of an occluding point corresponding to the testing pixel; and performing a shadow determination of the testing pixel, wherein coordinates of the testing pixel are (p.x, p.y, p.z), and the consistency test comprises: selecting one of the geometry shapes; reading geometry information of the selected geometry shape, the geometry information including vertex coordinates (v 0 .x, v 0 .y, v 0 .z), (v 1 .x, v 1 .y, v 1 .z), and (v 2 .x, v 2 .y, v 2 .z) of the selected geometry shape; obtaining coordinate weight values (w 1 , w 2 , w 3 ) of the occluding point by solving an equation of [ p · x p · y 1 ] = [ w 1 w 2 w 3 ] * [ v 0 · x v 0 · y 1 v 1 · x v 1 · y 1 v 2 · x v 2 · y 1 ] ; determining whether the selected geometry shape is consistent according to the coordinate weight values (w 1 , w 2 , w 3 ) of the occluding point; and determining the selected geometry shape as the occluding geometry shape-when the selected geometry shape is determined to be consistent.