Summary

3D meshes and mesh sequences are currently used in a number of domains, from entertainment to industry. This chapter begins by considering certain basic points of information theory, the sampling and quantization notions needed to reduce the quantity of data and notions of rate-distortion. It then discusses multiresolution analysis. This consists of decomposing a mesh into a series of resolution levels, for example by using wavelet transformations. The chapter then presents monoresolution coding methods based on highly effective connectivity coders, associating prediction techniques. Other progressive compression techniques, based on iterative simplification processes or guided by geometry, may be used to obtain satisfactory levels of compression with additional functionality. Sequence compression algorithms, fewer in number, are discussed considered in the next section, before addressing the definition of classic and perceptual metrics which may be used to evaluate the effectiveness of compression techniques.

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