Granted Patent B2

US 12,423,915 · App. 18/557,268 · Granted Sep 23, 2025

Inventors: Xiaotian Zhao (Tokyo, JP); Takafumi Okuyama (Tokyo, JP); Hiroyuki Kitada (Tokyo, JP)

Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

G06T17/205G06T15/20H04N21/234345H04N21/816G06T2210/08G06T2210/36

Abstract

Claims (46)

1. A distribution control system comprising a processor configured to execute operations comprising:

generating a plurality of virtual viewpoints around an object represented by stereoscopic data, wherein the stereoscopic data form at least a part of stereoscopic video content;

creating, for each virtual viewpoint of the plurality of virtual viewpoints, a piece of side stereoscopic data, wherein the piece of side stereoscopic data has a reduced amount of data according to a portion of the object that is visually unrecognizable from the virtual viewpoint; and

distributing the piece of side stereoscopic data of the virtual viewpoint among the piece of side stereoscopic data for each virtual viewpoint of the plurality of virtual viewpoints to a terminal of a user according to a position and a field of view of the user in a virtual space of the object.

2. The distribution control system according to claim 1 , wherein the creating the piece of side stereoscopic data further comprises:

creating the piece of side stereoscopic data in which the reduced amount of data of the portion is reduced by performing geometry simplification processing on a polygon mesh representing the portion that cannot be visually recognized from the virtual viewpoint.

3. The distribution control system according to claim 2 , wherein the portion that is visually unrecognizable from the virtual viewpoint includes a back surface portion of the object when the object is viewed from the virtual viewpoint.

4. The distribution control system according to claim 1 , wherein the portion that is visually unrecognizable from the virtual viewpoint includes a back surface portion of the object when the object is viewed from the virtual viewpoint.

5. The distribution control system according to claim 1 , the processor further configured to execute operations comprising:

creating a correspondence table, wherein the correspondence table includes the virtual viewpoint and a range in which the same quality of experience is obtained when the object is viewed from the virtual viewpoint are associated with each other,

wherein the distributing the piece of side stereoscopic data of the virtual viewpoint further comprises:

specifying, by referring to the correspondence table, the piece of side stereoscopic data of a virtual viewpoint corresponding to a range including the position when at least a part of the object is included in the field of view, and

distributing the specified piece of side stereoscopic data to the terminal.

6. The distribution control system according to claim 1 , wherein the piece of side stereoscopic data has the reduced amount of data according to a surface of the object that is hidden from the virtual viewpoint.

7. The distribution control system according to claim 1 , wherein the reduced amount of data is based on a reduced level of rendering details of the portion of the object.

8. A distribution control device comprising a processor configured to execute operations comprising:

generating a plurality of virtual viewpoints around an object represented by stereoscopic data, wherein the stereoscopic data form at least a part of stereoscopic video content;

creating, for each viewpoint of the plurality of virtual viewpoints, a piece of side stereoscopic data, wherein the piece of side stereoscopic data has a reduced amount of data according to a portion of the object that is visually unrecognizable from the virtual viewpoint; and

distributing the piece of side stereoscopic data of the virtual viewpoint among the piece of side stereoscopic data for each virtual viewpoint of the plurality of virtual viewpoints to a terminal of a user according to a position and a field of view of the user in a virtual space of the object.

9. The distribution control device according to claim 8 , wherein the creating the piece of side stereoscopic data further comprises:

creating the piece of side stereoscopic data in which the reduced amount of data of the portion is reduced by performing geometry simplification processing on a polygon mesh representing the portion that cannot be visually recognized from the virtual viewpoint.

10. The distribution control device according to claim 8 , wherein the portion that is visually unrecognizable from the virtual viewpoint includes a back surface portion of the object when the object is viewed from the virtual viewpoint.

11. The distribution control device according to claim 8 , the processor further configured to execute operations comprising:

creating a correspondence table, wherein the correspondence table includes in which the virtual viewpoint and a range in which the same quality of experience is obtained when the object is viewed from the virtual viewpoint are associated with each other,

wherein the distributing the piece of side stereoscopic data of the virtual viewpoint further comprises:

specifying, by referring to the correspondence table, the piece of side stereoscopic data of a virtual viewpoint corresponding to a range including the position when at least a part of the object is included in the field of view, and

distributing the specified piece of side stereoscopic data to the terminal.

12. The distribution control device according to claim 8 , wherein the piece of side stereoscopic data has the reduced amount of data according to a surface of the object that is hidden from the virtual viewpoint.

13. The distribution control device according to claim 8 , wherein the reduced amount of data is based on a reduced level of rendering details of the portion of the object.

14. A computer implemented method for distributing side stereoscopic data, comprising:

generating a plurality of virtual viewpoints around an object represented by stereoscopic data, wherein the stereoscopic data form at least a part of stereoscopic video content;

creating, for each virtual viewpoint of the plurality of virtual viewpoints, a piece of side stereoscopic data, wherein the piece of side stereoscopic data has a reduced amount of data of a portion of the object that is visually unrecognizable from the virtual viewpoint; is reduced; and

distributing the piece of side stereoscopic data of the virtual viewpoint among the piece of side stereoscopic data for each virtual viewpoint of the plurality of virtual viewpoints to a terminal of a user according to a position and a field of view of the user in a virtual space of the object.

15. The computer implemented method according to claim 14 , wherein the creating the piece of side stereoscopic data further comprises:

creating the piece of side stereoscopic data in which the reduced amount of data of the portion is reduced by performing geometry simplification processing on a polygon mesh representing the portion that cannot be visually recognized from the virtual viewpoint.

16. The computer implemented method according to claim 14 , wherein the portion that is visually unrecognizable from the virtual viewpoint includes a back surface portion of the object when the object is viewed from the virtual viewpoint.

17. The computer implemented method according to claim 14 , further comprising:

creating a correspondence table, wherein the correspondence table includes in which the virtual viewpoint and a range in which the same quality of experience is obtained when the object is viewed from the virtual viewpoint are associated with each other, wherein the distributing the piece of side stereoscopic data of the virtual viewpoint further comprises:

specifying, by referring to the correspondence table, the piece of side stereoscopic data of a virtual viewpoint corresponding to a range including the position when at least a part of the object is included in the field of view, and distributing the specified piece of side stereoscopic data to the terminal.

18. The computer implemented method according to claim 14 , wherein the piece of side stereoscopic data has the reduced amount of data according to a surface of the object that is hidden from the virtual viewpoint.

19. The computer implemented method according to claim 14 , wherein the reduced amount of data is based on a reduced level of rendering details of the portion of the object.

20. The computer implemented method according to claim 15 , further comprising:

creating a correspondence table, wherein the correspondence table includes in which the virtual viewpoint and a range in which the same quality of experience is obtained when the object is viewed from the virtual viewpoint are associated with each other,

wherein the distributing the piece of side stereoscopic data of the virtual viewpoint further comprises:

specifying, by referring to the correspondence table, the piece of side stereoscopic data of a virtual viewpoint corresponding to a range including the position when at least a part of the object is included in the field of view, and

distributing the specified piece of side stereoscopic data to the terminal.

Assignments (2)

Continuity (1)

References Cited (9)