Method and apparatus for point cloud coding

A method of point cloud geometry decoding in a point cloud decoder, comprising:

• receiving, from a coded bitstream for a point cloud that includes a set of points, first signaling information that indicates first chroma prediction residual information and second chroma prediction residual information of a point in the set of points is decoded based on a type of correlation from among a plurality of correlation types between the first chroma prediction residual information and the second chroma prediction residual information, the coded bitstream including the first chroma prediction residual information and the second chroma prediction residual information;
• determining the type of the correlation from among the plurality of correlation types between the first chroma prediction residual information and the second chroma prediction residual information based on the first signaling information;
• and
• reconstructing first chroma information and second chroma information based on the first chroma prediction residual information, the second chroma prediction residual information, and the determined type of the correlation from among the plurality of correlation types between the first chroma prediction residual information and the second chroma prediction residual information.

An apparatus of processing point cloud data, comprising:

• processing circuitry configured to:
• receive, from a coded bitstream for a point cloud that includes a set of points, chroma prediction residual information of a point in the set of points, the chroma prediction residual information including a Cb component and a Cr component;
• determine, from the coded bitstream for the point cloud, a type of correlation from among a plurality of correlation types between the Cb component and the Cr component of the chroma prediction residual information;
• and
• decode the chroma prediction residual information based on the determined type of the correlation from among the plurality of correlation types between the Cb component and the Cr component of the chroma prediction residual information.