公开(公告)号：US20210304354A1

公开(公告)日：2021-09-30

申请号：US17259861

申请日：2019-07-12

Applicant: Electronics and Telecommunications Research Institute ,  IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)

Inventor： Eun Young CHANG ,  Ji Hun CHA ,  Su Gil CHOI ,  Euee Seon JANG ,  Li CUI ,  So Myung LEE

IPC: G06T3/40 ,  G06T9/00 ,  G06T5/00

Abstract: There is provided a scalable point cloud encoding/decoding method and apparatus. The scalable point cloud decoding method comprises: acquiring an encoded texture image, an encoded geometry image, encoded occupancy map information, and encoded auxiliary patch-info information from a bitstream; acquiring a decoded texture image for each partition using the encoded texture image; reconstructing a geometry image of at least one item selected from among the encoded geometry image, the encoded occupancy map information, and the encoded auxiliary catch-info information; and reconstructing a point cloud using the texture images for the respective partitions and the geometry image.

公开(公告)号：US20200043199A1

公开(公告)日：2020-02-06

申请号：US16509677

申请日：2019-07-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)

Inventor： Eun Young CHANG ,  Ji Hun CHA ,  Su Gil CHOI ,  Euee Seon JANG ,  Min Ku LEE ,  You Sun PARK

IPC: G06T9/00

Abstract: There is provided a method of decoding point cloud data, the method comprising: decoding a bitstream to obtain attribute information of point cloud data, acquiring attributes of the point cloud data using the decoded attribute information and reconstructing the point cloud data using the obtained attributes, wherein the attribute information contains bit depth information of each attribute of the point cloud data.

公开(公告)号：US20230222694A1

公开(公告)日：2023-07-13

申请号：US18096415

申请日：2023-01-12

Applicant: Electronics and Telecommunications Research Institute ,  IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)

Inventor： Kwan Jung OH ,  Gwang Soon LEE ,  Jeong Il SEO ,  Hong Chang SHIN ,  Jun Young JEONG ,  Euee Seon JANG ,  Tian Yu Dong ,  Xin Li ,  Jai Young OH

IPC: G06T9/00 ,  G06T7/194 ,  G06T7/60

CPC classification number: G06T9/00 ,  G06T7/194 ,  G06T7/60 ,  G06T2207/20132

Abstract: A method of processing an immersive video according to the present disclosure includes performing pruning for an input image, generating an atlas based on patches generated by the pruning and generating a cropped atlas by removing a background region of the atlas.

公开(公告)号：US20210407145A1

公开(公告)日：2021-12-30

申请号：US17363859

申请日：2021-06-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eun Young CHANG ,  Euee Seon JANG ,  Tian Yu DONG ,  Ji Hun CHA ,  Kyu Tae KIM ,  Jae Young AHN

IPC: G06T9/00 ,  G06T3/40 ,  G06T7/00

Abstract: Provided is a method of compressing an occupancy map of a three-dimensional (3D) point cloud, and more specifically, a method of compressing an occupancy map of a point cloud in which an occupancy map image of a point cloud existing in a 3D space is compressed based on a compression quality or a patch-by-patch inspection method of the occupancy map image so that compression distortion is minimized when reconstructing the compressed occupancy map image so as to remarkably improve the quality of a reconstructed occupancy map image.