US 10,321,130 B2 · Enhanced deblocking filters for video coding

Abstract

Deblocking filters used in video coding systems (e.g., single layer video coding systems or multi-layer video coding systems) may be enhanced. Inter layer prediction for scalable video coding (SVC) may be implemented using enhanced deblocking filters. Enhanced deblocking filters may be configured to be adapted, for example by adjusting a deblocking filter boundary strength calculation process. A deblocking filter boundary strength parameter may be assigned in accordance with, for example, a video block partition size of an input video block or a neighboring video block, whether an input video block or a neighboring video block was predicted using an inter layer reference, and/or whether at least one of an input video block or a neighboring video block have one or more corresponding base layer blocks that were coded using intra mode.

Claims20

Dependent claims

A method of video coding, the method comprising:

identifying a first video block of a video bitstream;
identifying a second video block of the video bitstream that shares a boundary with the first video block;
determining whether at least one of the first video block or the second video block is predicted using inter layer prediction;
determining a boundary strength value for the boundary shared between the first video block and the second video block based at least on:
whether at least one of the first video block or the second video block is predicted using inter layer prediction, and
a partition size of the first video block, wherein, on a condition that the partition size of the first video block is large, the boundary strength value is determined to be a value that is associated with a strong deblocking filter;
and
applying a deblocking filter based on the boundary strength value to the boundary shared between the first video block and the second video block.

5 more elements

A device for video coding comprising:

a processor configured at least to:
receive a first video bock of a video bitstream;
receive a second video block of the video bitstream that shares a boundary with the first video block;
determine whether at least one of the first video block or the second video block is predicted using inter layer prediction;
determine a boundary strength value for the boundary shared between the first video block and the second video block based at least on:
whether at least one of the first video block or the second video block is predicted using inter layer prediction, and
a partition size of the first video block, wherein on a condition that the partition size of the first video block is large, the boundary strength value is determined to be a value that is associated with a strong deblocking filter;
and
apply a deblocking filter based on the boundary strength value to the boundary shared between the first video block and the second video block.

6 more elements

A method of video coding, the method comprising:

identifying a first video block of a video bitstream;
identifying a second video block of the video bitstream that shares a boundary with the first video block;
determining whether at least one of the first video block or the second video block is predicted using inter layer prediction;
determining whether at least one of the first video block or the second video block is associated with a base layer block that is coded using intra mode;
determining a boundary strength value for the boundary shared between the first video block and the second video block based at least on:
whether at least one of the first video block or the second video block is predicted using inter layer prediction, and
whether at least one of the first video block or the second video block corresponds to a base layer block that is coded using intra mode;
and
applying a deblocking filter based on the boundary strength value to the boundary shared between the first video block and the second video block.

6 more elements

A device for video coding comprising:

a processor configured at least to:
receive a first video bock of a video bitstream;
receive a second video block of the video bitstream that shares a boundary with the first video block;
determine whether at least one of the first video block or the second video block is predicted using inter layer prediction;
determine whether at least one of the first video block or the second video block is associated with a base layer block that is coded using intra mode;
determine a boundary strength value for the boundary shared between the first video block and the second video block based at least on:
whether at least one of the first video block or the second video block is predicted using inter layer prediction, and
whether at least one of the first video block or the second video block corresponds to a base layer block that is coded using intra mode;
and
apply a deblocking filter based on the boundary strength value to the boundary shared between the first video block and the second video block.

7 more elements

Dependencies are inferred from the claim text.

Enhanced deblocking filters for video coding

Life of this patent

Enhanced deblocking filters for video coding

Life of this patent

Abstract

Claims20