Distance-Based Probability Model for Octree Coding.

We present a context-driven method to encode nodes of an octree, which is typically used to encode the point-cloud geometry. Instead of using one bit per node of the tree, the context allows for deriving probabilities for that node based on distances of the actual voxel to the voxels in a reference point cloud. Accurate probabilities of the node state allow for the use of an arithmetic coder to re...