Mixed spatial and SNR scalability for TVM geometry coding

Time Varying Meshes (TVMs) are sequences of three-dimensional models created from multi-camera images. Like other kinds of mesh sequences, it has a great need for compression, in order to become largely usable. Alongside with other types of signals, mesh coding has received considerable attention towards scalable coding, which is a very important feature in many kinds of coded signals. Scalable mesh coding can be divided basically into three types of scalability: temporal, spatial and SNR (signal-to-noise ratio). In this work we focus on the use of block-based and run-length encoding aiming at achieving a combination of spatial and SNR scalability for the geometrical information of TVM. Our results have shown that it is possible to achieve scalability with only a minor increase in rate over a previous coding method.