MODELING METHOD OF DEFORMATION MOTIONS OF ELASTIC OBJECT

摘要

Disclosed is a modeling method of deformation motions of an elastic object. The method comprises: collecting a static point cloud of an elastic object, and a dynamic point cloud sequence during a deformation motion process (101); establishing a simulation tetrahedral mesh model for simulating deformation motions of the elastic object (102); driving the simulation tetrahedral mesh model to track the dynamic point cloud sequence to obtain a tracking deformation motion sequence (103); subjecting a material attribute coefficient of the elastic object and a corresponding reference shape to iterative estimation; performing the following operations during each iterative cycle: obtaining the reference shape corresponding to the current material attribute coefficient; according to the coefficient and the reference shape, driving the simulation tetrahedral mesh model to simulate the deformation motions under the same initial deformation, so as to obtain a simulated deformation motion sequence; calculating a position deviation between the simulated deformation motion sequence and the tracking deformation motion sequence; updating the material attribute coefficient along a direction where the position deviation decreases, until the material attribute coefficient at the time of the minimal position deviation and the corresponding reference shape of the simulation tetrahedral mesh model are found (104); and based on the material attribute coefficient at the minimal position deviation and the corresponding reference shape of the simulation tetrahedral mesh model, establishing an elastic object deformation motion model (105). By the modeling method, a realistic elastic object deformation motion model can be established.