# US 12,010,292 B2 · Method and device for configuring MPM list

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- Number: US 12,010,292 B2
- Document ID: US12010292B2
- Status: Granted
- Kind: B2
- Application number: 17/436,964
- Filed: 2019-12-23
- Published: 2022-06-02
- Granted: 2024-06-11
- Earliest claimed: 2019-03-12
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Ling Li; Jin Heo; Junghak Nam
- Web page: https://patentgrep.com/patent/US12010292B2

## CPC

- H04N 19/105: Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
- H04N 19/157: Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
- H04N 19/107: between spatial and temporal predictive coding, e.g. picture refresh
- H04N 19/11: among a plurality of spatial predictive coding modes
- H04N 19/132: Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
- H04N 19/172: the region being a picture, frame or field
- H04N 19/176: the region being a block, e.g. a macroblock
- H04N 19/196: being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters (processing of motion vectors H04N19/513)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A method for decoding a video performed by a decoding device according to the present disclosure, comprises: a step for deriving a prediction mode of a neighboring block of a current block; a step for deriving an intra prediction mode candidate for configuring an MPM list on the basis of the derived prediction mode of the neighboring block; a step for configuring the MPM list on the basis of the derived intra prediction mode candidate; a step for determining an intra prediction mode for the current block on the basis of the configured MPM list; a step for deriving prediction samples for the current block on the basis of the determined intra prediction mode for the current block; and a step for generating a reconstructed picture on the basis of the prediction samples.

## Claims

### Claim 1

An image decoding method performed by a decoding apparatus, the method comprising:
deriving a prediction mode of a neighboring block of a current block;
deriving an intra prediction mode candidate for configuring a most probable mode (MPM) list based on the derived prediction mode of the neighboring block;
configuring the MPM list based on the derived intra prediction mode candidate;
determining an intra prediction mode for the current block based on the configured MPM list;
deriving prediction samples for the current block based on the determined intra prediction mode for the current block; and
generating a reconstructed picture based on the prediction samples,
wherein the deriving the intra prediction mode candidate includes:
deriving an INTRA PLANAR mode as the intra prediction mode candidate based on a determination that the prediction mode of the neighboring block is not for an intra prediction and the prediction mode of the neighboring block is for a combined intra inter prediction (CIIP).

### Claim 2

An image encoding method performed by an encoding apparatus, the method comprising:
deriving a prediction mode of a neighboring block of a current block;
deriving an intra prediction mode candidate for configuring an MPM list based on the derived prediction mode of the neighboring block;
configuring the MPM list based on the derived intra prediction mode candidate;
determining an intra prediction mode for the current block based on the configured MPM list;
deriving prediction samples for the current block based on the determined intra prediction mode for the current block;
deriving residual samples for the current block based on the prediction samples; and
encoding image information including information on the residual samples,
wherein the deriving the intra prediction mode candidate includes:
deriving an INTRA PLANAR mode as the intra prediction mode candidate based on a determination that the prediction mode of the neighboring block is not for an intra prediction and the prediction mode of the neighboring block is for a CIIP.

### Claim 3

A method of transmitting data for an image, the method comprising:
obtaining a bitstream for image information, wherein the bitstream is generated by performing deriving a prediction mode of a neighboring block of a current block, deriving an intra prediction mode candidate for configuring an MPM list based on the derived prediction mode of the neighboring block, configuring the MPM list based on the derived intra prediction mode candidate, determining an intra prediction mode for the current block based on the configured MPM list, deriving prediction samples for the current block based on the determined intra prediction mode for the current block, deriving residual samples for the current block based on the prediction samples, and encoding the image information to generate the bitstream, wherein the image information includes information on the residual samples; and
transmitting the data comprising the bitstream,
wherein the deriving the intra prediction mode candidate includes:
deriving an INTRA PLANAR mode as the intra prediction mode candidate based on a determination that the prediction mode of the neighboring block is not for an intra prediction and the prediction mode of the neighboring block is for a CIIP.