End-to-end learning-based point cloud attribute coding framework

A method of encoding point cloud data, comprising:

• obtaining features representing voxel attributes in an octree structure, wherein feature for a current voxel is representative of at least a set of voxels that are still to be encoded;
• encoding the feature;
• determining an attribute probability of the current voxel based on the feature;
• and
• encoding attribute information of voxels in the octree structure, wherein the attribute information for the current voxel is encoded based on the attribute probability for the current voxel.

An apparatus for decoding point cloud data, comprising one or more processors and at least one memory coupled to the one or more processors, wherein the one or more processors are configured to:

• decode features representing voxel attributes in an octree structure, wherein a decoded feature for a current voxel is representative of at least a set of voxels that are still to be reconstructed;
• determine an attribute probability of the current voxel based on the decoded feature for the current voxel;
• decode attribute information of voxels in the octree structure, wherein the attribute information for the current voxel is decoded based on the attribute probability for the current voxel;
• and
• reconstruct the point cloud based on the attribute information of voxels in the octree structure.

An apparatus for encoding point cloud data, comprising one or more processors and at least one memory coupled to the one or more processors, wherein the one or more processors are configured to:

• obtain features representing voxel attributes in an octree structure, wherein feature for a current voxel is representative of at least a set of voxels that are still to be encoded;
• encode the feature;
• determine an attribute probability of the current voxel based on the feature;
• and
• encode attribute information of voxels in the octree structure, wherein the attribute information for the current voxel is encoded based on the attribute probability for the current voxel.