System for realistic image processing using ambient occlusion, method, and program

摘要

PROBLEM TO BE SOLVED: To provide a method, a computer program and a system for photorealistic imaging using ambient occlusion that address at least some of the problems and disadvantages associated with conventional systems and methods.;SOLUTION: Scene model data, including a scene geometry model and a plurality of pixel data describing objects, is received (505). A first pixel data is selected, a primary pixel color and a primary ray are generated (515, 520). A surface normal N and a primary hit color are determined based on the object intersected by the primary ray and the intersection point P, and the primary pixel color is modified. Ambient occlusion (AO) rays are generated based on the intersection point P and the surface normal N. For each AO ray, the AO ray direction D is reversed, and the AO ray origin O is set to a point outside the scene. If an AO ray does not intersect an object before reaching point P, that ray is included in ambient occlusion calculations, estimated, the primary pixel color is shaded and an image is generated.;COPYRIGHT: (C)2010,JPO&INPIT