• Xiang Zhang's avatar
    geom/m49232: octree node geometry quantisation · 4d0d1e66
    Xiang Zhang authored and David Flynn's avatar David Flynn committed
    This introduces a quantization scheme into the octree coding process,
    enables adaptive geometry quantization for different regions of the
    point cloud.  This in-loop scheme is independent of the any quantisation
    performed in non-normative pre-processing at the input to the encoder.
    At a particular depth of the octree, the remaining (uncoded) position
    bits of each point are quantised according to a per-node (or rather,
    per-subtree) QP.  The QP itself is signalled as an offset to a base QP.
    The following configuration parameters are added: