Processing

Please wait...

Settings

Settings

Goto Application

1. WO2020141946 - LOSSY COMPRESSION OF POINT CLOUD OCCUPANCY MAPS

Publication Number WO/2020/141946
Publication Date 09.07.2020
International Application No. PCT/KR2020/000142
International Filing Date 03.01.2020
IPC
G06T 9/00 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
9Image coding
H04N 19/184 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
169characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
184the unit being bits, e.g. of the compressed video stream
G06T 15/10 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
153D  image rendering
10Geometric effects
CPC
G06T 5/20
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
5Image enhancement or restoration
20by the use of local operators
G06T 9/001
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
9Image coding
001Model-based coding, e.g. wire frame
G06T 9/40
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
9Image coding
40Tree coding, e.g. quadtree, octree
H04N 19/184
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
169characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
184the unit being bits, e.g. of the compressed video stream
H04N 19/21
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
20using video object coding
21with binary alpha-plane coding for video objects, e.g. context-based arithmetic encoding [CAE]
Applicants
  • SAMSUNG ELECTRONICS CO., LTD. [KR]/[KR]
Inventors
  • JOSHI, Rajan Laxman
  • BUDAGAVI, Madhukar
  • DAWAR, Neha
Agents
  • KWON, Hyuk-Rok
  • LEE, Jeong-Soon
Priority Data
16/730,53230.12.2019US
62/788,19604.01.2019US
62/789,66308.01.2019US
62/790,17709.01.2019US
62/816,47111.03.2019US
62/836,79022.04.2019US
62/841,32601.05.2019US
62/869,65202.07.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LOSSY COMPRESSION OF POINT CLOUD OCCUPANCY MAPS
(FR) COMPRESSION AVEC PERTE DE CARTES D'OCCUPATION EN NUAGE PONCTUEL
Abstract
(EN)
A decoding device, an encoding device and methods for point cloud encoding and decoding are disclosed. The method for decoding includes decoding an attribute frame, a geometry frame, and occupancy map frame from a received bitstream. The attribute and geometry frames include pixels representing points of a 3D point cloud and the occupancy map frame includes values. The method also includes generating a binary occupancy map frame based on comparing the values in the occupancy map frame to a scaling threshold to determine whether the pixels included in the attribute and geometry frames at corresponding positions in the binary occupancy map frame are valid pixels. The method further includes generating the 3D point cloud using the attribute frame, the geometry frame, and the binary occupancy map frame.
(FR)
La présente invention concerne un dispositif de décodage, un dispositif d'encodage et des procédés de décodage et d'encodage en nuage ponctuel. Le procédé de décodage comprend le décodage d'une trame d'attribut, d'une trame de géométrie et d'une trame de carte d'occupation à partir d'un train de bits reçu. Les trames d'attribut et de géométrie comprennent des pixels qui représentent des points d'un nuage ponctuel 3D et la trame de carte d'occupation comprend des valeurs. Le procédé comprend également la génération d'une trame de carte d'occupation binaire sur la base de la comparaison des valeurs dans la trame de carte d'occupation à un seuil de mise à l'échelle pour déterminer si les pixels inclus dans les trames d'attribut et de géométrie à des positions correspondantes dans la trame de carte d'occupation binaire sont des pixels valides. Le procédé comprend également la génération du nuage ponctuel 3D en utilisant la trame d'attribut, la trame de géométrie et la trame de carte d'occupation binaire.
Also published as
Latest bibliographic data on file with the International Bureau