Abstract: This paper uses Face Fixer compression algorithm to compress connectivity data of polygon meshes, and uses a order-3 adaptive arithmetic coder to further improve compression rates. By transforming the vertex positions to a local coordinate system defined upon the reference polygon and combining the quantization, parallelogram prediction of vertex coordinates and order-3 adaptive arithmetic coder, this paper implements the compression of geometry data of polygon meshes. It demonstrates excellent compression rates, almost without damage to model quality.

Key words: Geometry compression, General polygon meshes, Quantization, Parallelogram prediction

摘要： 使用Face Fixer方法对由一般多边形网格构成的三维模型拓扑信息进行了压缩，采用3阶自适应算术编码进一步提高压缩比，通过把顶点位置坐标变换到局部坐标系中，结合量化、平行四边形顶点坐标预测以及算术编码来实现三维网格模型几何信息的压缩，在几何模型质量基本没有损失的情况下，获得了很好的压缩性能。

关键词: 几何压缩, 一般多边形, 量化, 平行四边形预测

CLC Number: 

• TP391.9