A Coherence‐based Collision Detection Method for Dressed Human Simulation

Abstract

In this paper, paper we present a coherence-based method to detect collisions between the garment and human model for dressed human simulations. Based on the property of coherence, collisions can be rapidly detected by tracking the movement of the most likely geometric elements to collide. The voxel technique is employed to quickly identify the potential collision region. Experimental results show that our method is very efficient.

A survey on CAD methods in 3D garment design

“…Any efficient collision detection method should take advantage of this coherent property. Some basic coherence-based methods are studied in [9,120].…”

Coherent hierarchical collision detection for clothing animation

“…In addition, in clothing animation, the positions of mannequin elements need to be updated only when the body moves into the next key frame, while the clothing vertex update happens at each time step. Thus, the frequency for updating a BVH tree of the human body is lower than updating the BVH tree of clothing in animation systems where the number elements in the mannequin model is higher than that in the clothing model, which is often the case studied by researchers [22,[27][28][29][30].…”

“…This approach is time-consuming and seldom used for collision detection in clothing simulation until Zhang in [29] proposes an improved algorithm. In [30], Zhang proposes a coherence-based collision detection method based on the uniform spatial subdivision technique for clothing simulation. He divides the whole volume of the human body into equal-sized blocks first, and then stores each triangle patch into these blocks according to the position closeness relationship.…”

Collision Problem: Characteristics for a Taxonomy

“…Cloth animation [21] uses temporal coherence to speed up the collision detection among cloths and human models, because the movement of each geometric element is very small along each time step.…”

“…Animation often addresses collisions, as in cloth [20,21] and herd-flock problems [22,23]. Collisions also play a role for achieving realism in games [24].…”