公开(公告)号：US20220172404A1

公开(公告)日：2022-06-02

申请号：US17233195

申请日：2021-04-16

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Yong Hwan KIM ,  Jieon KIM ,  JinGang HUH ,  Jong-geun PARK

IPC: G06T9/00 ,  G06T3/40 ,  H03M7/30

Abstract: The present disclosure relates to an apparatus and method for fast refining segmentation for a V-PCC encoder. The apparatus may include a grid segmentation unit segmenting a coordinate space of a point cloud into grid units, and an edge cube search unit searching a cube containing one or more points among the cubes segmented into grid units and containing a segment boundary. The apparatus may also include a surrounding cube search unit searching an edge surrounding cube containing one or more points within a predetermined range from the edge cube, and a smooth score calculation unit calculating smooth scores for all the edge surrounding cubes and all the edge cubes. The apparatus may further include a projection plane index update unit obtaining a normal score based on the calculated smooth scores and updating a projection plane index of each point in the edge cube using the normal score.