Method and apparatus for processing video signal

Patent metadata

Field	Value
Publication number	US-2016165259-A1
Application number	US-201414903920-A
Country	US
Kind code	A1
Filing date	Jul 18, 2014
Priority date	Jul 18, 2013
Publication date	Jun 9, 2016
Grant date	—

Abstract

The present invention relates to a method and an apparatus for processing a video signal, capable of: obtaining a temporary inter-view motion vector corresponding to a first unit; obtaining virtual depth information corresponding to the first unit by using the temporary inter-view motion vector; obtaining an inter-view motion vector corresponding to the first unit by using the virtual depth information corresponding to the first unit; and updating the inter-view motion vector corresponding to the first unit.

First claim

1 . A method for processing a video signal, comprising:
obtaining a temporary inter-view motion vector corresponding to a first unit; obtaining virtual depth information corresponding to the first unit using the temporary inter-view motion vector; obtaining an inter-view motion vector corresponding to the first unit using the virtual depth information corresponding to the first unit; and updating the inter-view motion vector corresponding to the first unit.

2 . The method according to claim 1 , wherein the temporary inter-view motion vector is obtained using an inter-view motion vector corresponding to a neighboring unit of the first unit.

3 . The method according to claim 1 , wherein the virtual depth information is depth information of a depth block of a view different from the first unit.

4 . The method according to claim 1 , wherein the updating of the inter-view motion vector comprises including the inter-view motion vector corresponding to the first unit in a motion vector list of the first unit.

5 . The method according to claim 1 , further comprising obtaining an inter-view motion vector corresponding to a second unit using the updated inter-view motion vector.

6 . The method according to claim 1 , further comprising:
obtaining a temporary inter-view motion vector corresponding to a second unit using the inter-view motion vector corresponding to the first unit; obtaining virtual depth information corresponding to the second unit using the temporary inter-view motion vector corresponding to the second unit; and obtaining an inter-view motion vector corresponding to the second unit using the virtual depth information corresponding to the second unit.

7 . The method according to claim 5 , further comprising updating the inter-view motion vector corresponding to the second unit.

8 . The method according to claim 1 , further comprising obtaining a first virtual reference block using the inter-view motion vector corresponding to the first unit,
wherein the first virtual reference block is included in a virtual reference picture for view synthesis prediction.

9 . An apparatus for processing a video signal, comprising:
an inter-prediction unit configured to obtain a temporary inter-view motion vector corresponding to a first unit, to obtain virtual depth information corresponding to the first unit using the temporary inter-view motion vector, to obtain an inter-view motion vector corresponding to the first unit using the virtual depth information corresponding to the first unit and to update the inter-view motion vector corresponding to the first unit.

10 . The apparatus according to claim 8 , wherein the temporary inter-view motion vector is obtained using an inter-view motion vector corresponding to a neighboring unit of the first unit.

11 . The apparatus according to claim 8 , wherein the virtual depth information is depth information of a depth block of a view different from the first unit.

12 . The apparatus according to claim 8 , wherein the inter-prediction unit is configured to include the inter-view motion vector corresponding to the first unit in a motion vector list of the first unit.

13 . The apparatus according to claim 9 , wherein the inter-prediction unit is configured to obtain an inter-view motion vector corresponding to a second unit using the updated inter-view motion vector.

14 . The apparatus according to claim 9 , wherein the inter-prediction unit is configured to obtain a temporary inter-view motion vector corresponding to a second unit using the inter-view motion vector corresponding to the first unit, to obtain virtual depth information corresponding to the second unit using the temporary inter-view motion vector corresponding to the second unit and to obtain an inter-view motion vector corresponding to the second unit using the virtual depth information corresponding to the second unit.

15 . The apparatus according to claim 14 , wherein the inter-prediction unit is configured to update the inter-view motion vector corresponding to the second unit.

16 . The apparatus according to claim 9 , wherein the inter-prediction unit is configured to obtain a first virtual reference block using the inter-view motion vector corresponding to the first unit,
wherein the first virtual reference block is included in a virtual reference picture for view synthesis prediction.

Assignees

• Lg Electronics Inc

Inventors

• Nam Junghak
• Yea Sehoon
• Kim Taesup
• Yoo Sunmi
• Jung Jiwook
• Heo Jin

Classifications

• H04N19/136

  Incoming video signal characteristics or properties · CPC title

• H04N19/176

  the region being a block, e.g. a macroblock · CPC title

• H04N19/52 Primary

  by predictive encoding · CPC title

• H04N19/597 Primary

  specially adapted for multi-view video sequence encoding · CPC title

• H04N19/533

  Motion estimation using multistep search, e.g. two-dimensional [2D]-log search or one-at-a-time search [OTS] · CPC title