US 11,146,810 B2 · Decoder-side motion vector refinement

Abstract

A video coding device, such as a video encoder or video decoder, may determine that a block of video data has at least one of a width less than 8 pixels, a height less than 8 pixels, or the width and the height being equal to 8 pixels; in response, determine that the block is not coded using decoder-side motion vector refinement (DMVR); and code the block without performing DMVR for the block. The video coding device may determine that a second block of video data has a size of at least 8×N or N×8, wherein N is an integer value greater than 8, in response to determining that the second block of video data has the size of at least 8×N or N×8, and then determine whether to code the second block using DMVR.

Claims37

Dependent claims

A method of coding video data, the method comprising:

determining that a block of video data has one of:
1) a width of 4 pixels and a height of more than 8 pixels or 2) a height of 4 pixels and a width of more than 8 pixels;
in response to determining that the block of video data has the one of 1) the width of 4 pixels and the height of more than 8 pixels or 2) the height of 4 pixels and the width of more than 8 pixels, determining that decoder-side motion vector refinement (DMVR) is not available to be used for the block;
and
in response to determining that DMVR is not available to be used for the block, coding the block without performing DMVR for the block.

2 more elements

A device for coding video data, the device comprising:

a memory configured to store video data;
and
one or more processors implemented in circuitry and configured to:
determine that a block of video data has one of:
1) a width of 4 pixels and a height of more than 8 pixels or 2) a height of 4 pixels and a width of more than 8 pixels;
in response to determining that the block of video data has the one of 1) the width of 4 pixels and the height of more than 8 pixels or 2) the height of 4 pixels and the width of more than 8 pixels, determine that decoder-side motion vector refinement (DMVR) is not available to be used for the block;
and
in response to determining that DMVR is not available to be used for the block, code the block without performing DMVR for the block.

5 more elements

A non-transitory computer-readable storage medium having stored thereon instructions that, when executed, cause a processor to:

determine that a block of video data has one of:
1) a width of 4 pixels and a height of more than 8 pixels or 2) a height of 4 pixels and a width of more than 8 pixels;
in response to determining that the block of video data has the one of 1) the width of 4 pixels and the height of more than 8 pixels or 2) the height of 4 pixels and the width of more than 8 pixels, determine that decoder-side motion vector refinement (DMVR) is not available to be used for the block;
and
in response to determining that DMVR is not available to be used for the block, code the block without performing DMVR for the block.

2 more elements

A device for coding video data, the device comprising:

means for determining that a block of video data has one of:
1) a width of 4 pixels and a height of more than 8 pixels or 2) a height of 4 pixels and a width of more than 8 pixels;
means for determining that decoder-side motion vector refinement (DMVR) is not available to be used for the block in response to determining that the block of video data has the one of 1) the width of 4 pixels and the height of more than 8 pixels or 2) the height of 4 pixels and the width of more than 8 pixels;
and
means for coding the block without performing DMVR for the block in response to determining that DMVR is not available to be used for the block.

2 more elements

Dependencies are inferred from the claim text.

Decoder-side motion vector refinement

Life of this patent

Decoder-side motion vector refinement

Life of this patent

Abstract

Claims37