Patent ID: 11954890
Assignee: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An apparatus for fast refining segmentation for a video-based point cloud compression (V-PCC) encoder, the apparatus comprising:
a grid segmentator configured to segment a coordinate space of a point cloud into grid units;
an edge cube searcher configured to search an edge cube containing one or more points among the cubes segmented into grid units and containing a segment boundary;
a surrounding cube searcher configured to search an edge surrounding cube containing one or more points within a predetermined range from the edge cube;
a smooth score calculator configured to calculate smooth scores for all the edge surrounding cubes and all the edge cubes; and
a projection plane index updater configured to obtain a normal score based on the calculated smooth scores and update a projection plane index of each point in the edge cube using the normal score,
wherein the edge cube searcher is configured to:
search a direct edge cube containing two or more points, and
search an indirect edge cube located around the edge cube and containing one or more points.