Method and device for providing depth based block partitioning in high efficiency video coding

Patent metadata

Field	Value
Publication number	US-10057586-B2
Application number	US-201514752072-A
Country	US
Kind code	B2
Filing date	Jun 26, 2015
Priority date	Jun 26, 2014
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

Depth based block partitioning in high efficiency video coding is provided by partitioning a video image block into different partitions using a binary segmentation mask. A determination is made whether to filter pixels at a boundary between the partitions. A particular pixel is not filtered in response to each adjacent pixel in vertical and horizontal planes in relation to the particular pixel having a same value. The particular pixel is filtered in response to any adjacent pixel in the vertical and horizontal planes in relation to the particular pixel having a different value than any other adjacent pixel in the vertical and horizontal planes in relation to the particular pixel. Pixels are filtered pursuant to a filtering process in response to a filtering determination.

First claim

What is claimed is:

1. A method for providing block partition boundary filtering for depth based block partitioning in high efficiency video coding, comprising:
obtaining a binary mask based on a depth block corresponding to a current texture block, in which the binary mask is used for the texture block partitioning;
partitioning the current texture block according to the binary mask;
determining that at least one pixel position of a first set of adjacent pixel positions in the binary mask in at least one of a vertical plane and a horizontal plane in relation to a first particular pixel position at the block partition boundary between different partitions in the current texture block has a different depth value in the binary mask than other pixel positions in the first set of adjacent pixel positions;
determining that all pixel positions of a second set of adjacent pixel positions in the binary mask in at least one of a further vertical plane and a further horizontal plane in relation to a second particular pixel position at the block partition boundary between the different partitions in the current texture block have a same depth value;
performing pixel processing to filter an intensity value in the current texture block at the first particular pixel position according to intensity values in the current texture block at the first set of pixel positions and not to filter an intensity value in the current texture block at the second particular pixel position; and
updating the intensity value at the first particular pixel position in the current texture block according to the pixel processing.

2. The method of claim 1 , wherein the pixel processing performed on the intensity value in the current texture block at the first particular pixel position comprises:
combining the intensity values in the current texture block at the first set of pixel positions except for the intensity value at the first particular pixel position to generate a filtered intensity value in the current texture block at the first particular pixel position.

3. The method of claim 1 , wherein the intensity value at the second particular pixel position in the current texture block remains at a current intensity value at the second particular pixel position in the texture block when each adjacent pixel position in the second set of pixel positions has the same depth value in the binary mask.

4. The method of claim 1 , wherein the intensity value at the first particular pixel position in the current texture block is adjusted based on respective intensity values at the first set of adjacent pixel positions in the current texture block.

5. The method of claim 1 , wherein:
the depth values at the pixel positions in the vertical plane adjacent to the first particular pixel position include depth values in the binary mask at pixel positions to the left and right of the first particular pixel position in the vertical plane adjacent to the particular pixel position.

6. The method of claim 1 , wherein:
the depth values at the pixel positions in the vertical plane adjacent to the first particular pixel position include depth values in the binary mask at pixel positions in the horizontal plane above and below the first particular pixel position.

7. The method of claim 1 , wherein the pixel processing performed to adjust the intensity value at the first particular pixel position of the current texture block includes at least one of averaging, weighted averaging, and median filtering computations.

8. The method of claim 1 , further comprising, after obtaining the binary mask:
performing motion vector processing based on the pixel positions in the binary mask having a first value according to a first motion vector to generate a first texture block;
performing motion vector processing based on the pixel positions in the binary mask having a second value according to a second motion vector to generate a second texture block;
combining the first and second texture blocks according to the block boundary to generate the current texture block.

9. A device for providing block partition boundary filtering for depth based block partitioning in high efficiency video coding, comprising:
a memory configured to store data and instructions; and
a processor, upon executing the instructions, is configured to:
obtain a binary mask based on a depth block corresponding to a current texture block, in which the binary mask is used for the texture block partitioning;
partition the current texture block according to the binary mask;
determine that at least one pixel position of a first set of adjacent pixel positions in the binary mask in at least one of a vertical plane and a horizontal plane in relation to a first particular pixel position at the block partition boundary between different partitions in the current texture block has a different depth value in the binary mask than other pixel positions in the first set of adjacent pixel positions;
determine that all pixel positions of a second set of adjacent pixel positions in the binary mask in at least one of a further vertical plane and a further horizontal plane in relation to a second particular pixel position at the block partition boundary between the different partitions in the current texture block have a same depth value;
perform pixel processing to filter an intensity value in the current texture block at the first particular pixel position according to intensity values in the current texture block at the first set of pixel positions and not to filter an intensity value in the current texture block at the second particular pixel position; and
update the intensity value at the first particular pixel position in the current texture block according to the pixel processing.

10. The device of claim 9 , wherein the pixel processing performed on the pixel value in the current texture block at the first particular pixel position comprises:
combining the pixel values in the current texture block at the first set of pixel positions except for the pixel value at the first particular pixel position to generate a filtered pixel value in the current texture block at the first particular pixel position.

11. The device of claim 10 , wherein the pixel processing performed to adjust the intensity value at the particular pixel position of the current texture block includes at least one of averaging, weighted averaging, and median filtering computations.

12. The device of claim 9 , wherein the intensity value at the second particular pixel position of the current texture block remains at a current intensity value at the second particular pixel position in the texture block when each adjacent pixel position in the second set of pixel positions has the same depth value in the binary mask.

13. The device of claim 9 , wherein the intensity value at the first particular pixel position in the current texture block is adjusted based on respective intensity values at the first set of adjacent pixel positions in the current texture block.

14. The device of claim 9 , wherein:
the depth values at the pixel positions in the vertical plane adjacent to the first particular pixel position include depth values in the binary mask at pixel positions to the left and right of the first particular pixel position in the vertical plane adjacent to the particular pixel position.

15. The device of claim 9 , wherein:
the depth values at the pixel positions in the vertical plane adjacent to the first particular pixel position include depth values in the binary mask at pixel positions in the horizontal plane above and below the first particular pixel

Assignees

• Futurewei Technologies Inc
• Univ Santa Clara

Inventors

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

Classifications

• H04N19/182 Primary

  the unit being a pixel · CPC title

• H04N19/14

  Coding unit complexity, e.g. amount of activity or edge presence estimation (H04N19/146 takes precedence) · CPC title

• H04N19/17

  the unit being an image region, e.g. an object · CPC title

• H04N19/119

  Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks · CPC title

• H04N19/597 Primary

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