An Animation Compression Method Based on Local Cylindrical Coordinates

Abstract

The invention discloses an animation compression method based on local cylinder coordinates and is mainly applied to animation data of a triangular grid. The method comprises steps that a network model animation sequence of a fixed topology structure is provided, a reference network model of the same topology structure is selected, a certain triangular patch is designated to be a root node according to the unchanged topology structure to establish a minimal spanning tree by taking the triangular patch as a node; traversal of the minimal spanning tree is carried out, a local cylinder coordinate system is established according to adjacency relations of the triangular patches from the designated root node, and a local cylinder coordinate value of each vertex is further calculated; data quantification is carried out according to the traversal sequence, and the local cylinder coordinate values of the vertexes are corrected according to a reverse quantification result; quantification and entropy coding of the coordinate data are carried out. The method is advantaged in that the animation data having slight extension characteristic and abundant local detail changes can be efficiently and rapidly compressed, and cloth animation sequences having slight deformation have the excellent compression effect.

Description

technical field [0001] The invention relates to an animation compression method, in particular to an animation compression method based on local cylindrical coordinates, which realizes high-efficiency compression of triangular grid animation. Background technique [0002] With the continuous development of simulation software and computer hardware computing power, animation simulation of virtual cloth is widely used in many fields such as film and television special effects, animation generation and virtual reality, and has become a topic that has attracted much attention of researchers in recent years. However, how to truly reproduce the cloth animation with rich details still requires a lot of computing resources, making it difficult to be practical in mobile platforms or other high frame rate applications. The key challenge is: how to efficiently express the animation of cloth models with rich details, with compact storage, fast and cheap decompression, and low latency. ...

AI Technical Summary

Problems solved by technology

However, the cloth animation is characterized by low scalability, but the geometric change frequency of the cloth mesh is high, and the local details are rich

Therefore, the existing methods need to be improved for the compressed cloth animation effect.

Images