Patent ID: 11954891
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. A method of compressing an occupancy map of a three-dimensional (3D) point cloud, the method comprising the steps of:
(a) generating an occupancy map image using occupancy map information, compressing the occupancy map image using a video codec, and decompressing the compressed occupancy map image; and
(b) resetting a thresholdLossyOM parameter to be decreased to a preset value in consideration of at least one of a user-specified compression quality or a patch-by-patch inspection result of the occupancy map image decompressed in the step (a);
wherein the step (b) includes, in consideration of the compression quality, comparing the occupancy map image decompressed in the step (a) with the occupancy map image generated in the step (a) to calculate a peak signal-to-noise ratio (PSNR) value, identifying whether the calculated PSNR value is less than a preset PSNR threshold, and when the calculated PSNR value is less than the PSNR threshold, resetting the thresholdLossyOM parameter to be decreased to a preset value.