Patent ID: 11917205
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. An apparatus for coding video data corresponding to a point cloud, the apparatus comprising:
at least one memory configured to store computer program code; and
at least one processor configured to access the at least one memory and operate according to the computer program code, the computer program code comprising:
obtaining code configured to cause the at least one processor to obtain a plurality of transform coefficients corresponding to attributes of the point cloud; and
encoding code configured to cause the at least one processor to encode the plurality of transform coefficients to generate an embedded bitstream, the encoding code comprising:
first iterating code configured to cause the at least one processor to iterate over a first plurality of bit-planes of the plurality of transform coefficients to process all points in the point cloud, wherein each of the first plurality of bit-planes comprises a plurality of bits;
second iterating code configured to cause the at least one processor to iterate over a second plurality of Levels-Of-Detail (LODs), corresponding to points in the point cloud, in each iteration of the first iterating code to process all points in the point cloud; and
quantizing code configured to cause the at least one processor to perform quantization with respect to the plurality of transform coefficients in each iteration the second iterating code that are in each iteration of the first iterating code

wherein the first iterating code is configured to cause the at least one processor over the first plurality of bit-planes from a Most Significant Bit (MSB) to a Least Significant Bit (LSB), the MSB being of a maximum value of scaled version of a lifting transform coefficient, and the LSB being of a first syntax element that indicates a remainder to be encoded for the lifting coefficient after subtraction of a result of a bitplane coding iteration.