One Solution for Accurate Collision Detection in Virtual Assembly Environment

Virtual assembly system requires higher accuracy on collision detection than ordinary virtual reality application. Based on analyzing the requirement of virtual assembly on accurate collision detection, a kind of hierarchical accurate collision detection thought is proposed, which includes three levels: assembly environment level, polygon level and accurate geometry topology model level. Three ways for virtual assembly system to obtain accurate geometry topology model are given. A specific solution that synthetically uses geometry graph supporting toolkit to realize hierarchical accurate collision detection is presented. A comparison experiment manifests that above solution and approach are feasible and efficient.