Granted Patent B2

US 12,277,739 · App. 17/958,271 · Granted Apr 15, 2025

Inventors: Kyohei Unno (Fujimino, JP); Kei Kawamura (Fujimino, JP); Sei Naito (Fujimino, JP)

Assignee: KDDI CORPORATION

G06T9/40G06T2210/56

Abstract

Claims (13)

1. A point-cloud decoding device comprising:

a geometry information decoder that decodes a flag that controls whether to apply a method in which octree, quadtree, and binary tree division is adaptively carried out or not; and

an attribute-information decoder that decodes a flag that controls whether to apply “scalable lifting” or not; wherein,

a restriction is set not to apply the “scalable lifting” when the method is applied.

2. The point-cloud decoding device according to claim 1 , wherein “Octree” is applied when the “scalable lifting” is applied.

3. A point-cloud decoding method comprising:

decoding a flag that controls whether to apply a method in which octree, quadtree, and binary tree division is adaptively carried out or not; and

decoding a flag that controls whether to apply “scalable lifting” or not; wherein,

a restriction is set not to apply the “scalable lifting” when the method is applied.

4. A program stored on a non-transitory computer-readable medium that causes a point-cloud decoding device to execute:

decoding a flag that controls whether to apply a method in which octree, quadtree, and binary tree division is adaptively carried out or not; and

decoding a flag that controls whether to apply “scalable lifting” or not; wherein,

a restriction is set not to apply the “scalable lifting” when the method is applied.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (25)