System and method for depth map coding for smooth depth map area

Patent metadata

Field	Value
Publication number	US-10097838-B2
Application number	US-201514882256-A
Country	US
Kind code	B2
Filing date	Oct 13, 2015
Priority date	Oct 13, 2014
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

A method for coding a coding unit that is coded with a single sample value is provided. The method selects a coding pattern from at least two predetermined coding patterns, each of which includes a plurality of boundary neighboring samples of the coding unit that have been reconstructed, and decodes the coding unit according to a value of at least one of the plurality of boundary neighboring samples of the selected coding pattern that is available.

First claim

What is claimed is:

1. A method comprising:
selecting, by a processing system, a coding pattern from a plurality of coding patterns for decoding a coding unit that has been coded with a single sample value, each of the plurality of coding patterns being predetermined to indicate one or more reference samples from which a reference sample can be selected for coding the coding unit, and each of the one or more reference samples being located in a predetermined position in a neighboring coding unit of the coding unit, wherein each of the one or more reference samples is a boundary neighboring sample in a corresponding neighboring coding unit and has been reconstructed; and
decoding, by the processing system, the coding unit according to a value of a first reference sample indicated by the selected coding pattern.

2. The method of claim 1 , further comprising determining, by the processing system, availability of the first reference sample indicated by the selected coding pattern.

3. The method of claim 1 , further comprising decoding the coding unit according to a default value, when the one or more reference samples of the selected coding pattern are not available.

4. The method of claim 3 , wherein the default value is predetermined or calculated.

5. The method of claim 1 , wherein decoding the coding unit comprises:
filling the coding unit using the value of the first reference sample indicated by the selected coding pattern.

6. The method of claim 1 , wherein each of the plurality of coding patterns comprises a first boundary neighboring sample located in a first predetermined position in a first neighboring coding unit of the coding unit that has been reconstructed, and a second boundary neighboring sample located in a second predetermined position in a second neighboring coding unit of the coding unit that has been reconstructed.

7. The method of claim 6 , wherein the first boundary neighboring sample comprises a first boundary sample, a middle boundary sample, or a last boundary sample of the first neighboring coding unit.

8. The method of claim 6 , wherein the second boundary neighboring sample comprises a first boundary sample, a middle boundary sample, or a last boundary sample of the second neighboring coding unit.

9. The method of claim 1 , wherein the one or more reference samples of each of the plurality of coding patterns are ordered in a predetermined order.

10. The method of claim 9 , wherein the one or more reference samples are ordered according to priority of the one or more reference samples with respect to their positions.

11. The method of claim 1 , wherein one of the plurality of coding patterns is a default coding pattern.

12. The method of claim 1 , further comprising receiving a signal indicating which of the plurality of coding patterns is to be selected.

13. An apparatus comprising:
a non-transitory memory storage comprising instructions; and
one or more processors in communication with the memory storage, wherein the one or more processors execute the instructions to:
select a coding pattern from a plurality of coding patterns for decoding a coding unit that has been coded with a single sample value, each of the plurality of coding patterns being predetermined to indicate one or more reference samples from which a reference sample can be selected for coding the coding unit, and each of the one or more reference samples being located in a predetermined position in a neighboring coding unit of the coding unit, wherein each of the one or more reference samples is a boundary neighboring sample in a corresponding neighboring coding unit and has been reconstructed; and
decode the coding unit according to a value of a first reference sample indicated by the selected coding pattern.

14. The apparatus of claim 13 , wherein the one or more processors execute the instructions to further determine availability of the first reference sample indicated by the selected coding pattern.

15. The apparatus of claim 13 , wherein the one or more processors execute the instructions to further decode the coding unit according to a default value, when the one or more reference samples of the selected coding pattern are not available.

16. The apparatus of claim 13 , wherein each of the plurality of coding patterns comprises a first boundary neighboring sample located in a first predetermined position in a first neighboring coding unit of the coding unit that has been reconstructed, and a second boundary neighboring sample located in a second predetermined position in a second neighboring coding unit of the coding unit that has been reconstructed.

17. The apparatus of claim 13 , wherein the one or more reference samples in each of the plurality of coding patterns are ordered in a predetermined order.

18. The apparatus of claim 17 , wherein the one or more reference samples are ordered according to priority of the one or more reference samples with respect to their positions.

19. The apparatus of claim 13 , wherein one of the plurality of coding patterns is a default coding pattern.

20. The apparatus of claim 13 , wherein the one or more processors execute the instructions to further receive a signal indicating which of the plurality of coding patterns is to be selected.

Assignees

• Futurewei Technologies Inc
• Univ Santa Clara

Inventors

• Zheng Jianhua
• Gu Zhouye
• Zhang Chen-Xiong
• Ling Nam

Classifications

• H04N19/176 Primary

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

• H04N19/167

  Position within a video image, e.g. region of interest [ROI] · CPC title

• H04N19/597

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

• H04N19/11

  among a plurality of spatial predictive coding modes · CPC title