JP-2026076325-A - Video signal processing method and apparatus using multiple assumption prediction

JP2026076325AJP 2026076325 AJP2026076325 AJP 2026076325AJP-2026076325-A

Abstract

[Problem] To provide a video signal processing method and apparatus for encoding/decoding video signals. [Solution] The video signal processing method includes the steps of: receiving information for predicting the current block; determining whether or not a merge mode is applied to the current block based on the information for prediction; obtaining a first syntax element indicating whether or not a combined prediction indicating a prediction mode that combines inter-prediction and intra-prediction is applied to the current block if a merge mode is applied to the current block; generating an inter-prediction block and an intra-prediction block of the current block if the first syntax element indicates that the combined prediction is applied to the current block; and generating a combined prediction block of the current block by weighting the inter-prediction block and the intra-prediction block. [Selection Diagram] Figure 45

Inventors

ゴンジュン・コ
ドンチョル・キム
ジュヒョン・ソン
ジェホン・ジュン
ジンサム・クァク

Assignees

ウィルスインスティテュートオブスタンダーズアンドテクノロジーインコーポレイティド

Dates

Publication Date: 20260511
Application Date: 20260216
Priority Date: 20181012

Claims (15)

A video signal processing method, Currently, we are in the stage of receiving information for block prediction; Based on the information for the prediction, the step of determining whether or not a merge mode is applied to the current block; If a merge mode is applied to the current block, the step is to obtain a first syntax element indicating whether or not a combined prediction is applied to the current block, wherein the combined prediction indicates a prediction mode that combines inter-prediction and intra-prediction; A video signal processing method comprising: generating an interprediction block and an intraprediction block of the current block when the first syntax element indicates that the combined prediction is applied to the current block; and generating a combined prediction block of the current block by weighting the interprediction block and the intraprediction block.
The video signal processing method according to claim 1, further comprising the steps of: decoding the residual block of the current block; and restoring the current block using the combination prediction block and the residual block.
The step of decoding the residual block is as follows: If the first syntax element indicates that the combination prediction is not applied to the current block, the process further includes obtaining a second syntax element indicating whether or not a sub-block transformation is applied to the current block. The video signal processing method according to claim 2, wherein the subblock conversion indicates a conversion mode in which the conversion is applied to only one subblock of the current block which is divided horizontally or vertically.
The video signal processing method according to claim 3, wherein if the second syntax element is not present, the value of the second syntax element is inferred to be 0.
The video signal processing method according to claim 1, wherein, if the first syntax element indicates that the combination prediction is applied to the current block, the intra-prediction mode for generating the intra-prediction block of the current block is set to planar mode.
The process further includes the step of setting the positions of the left peripheral block and the upper peripheral block that are referenced for the aforementioned combination prediction, The video signal processing method according to claim 1, wherein the positions of the left peripheral block and the upper peripheral block are the same as the positions referenced by the intra prediction.
The video signal processing method according to claim 6, wherein the positions of the left peripheral block and the upper peripheral block are determined using a scaling factor variable determined by the color component index value of the current block.
A video signal processing device, Including the processor, The aforementioned processor, We are currently receiving information for block prediction. Based on the information for the prediction, it is determined whether or not the merge mode is applied to the current block. If the merge mode is applied to the current block, a first syntax element is obtained indicating whether or not combined prediction is applied to the current block, where the combined prediction indicates a prediction mode that combines interpretation and intraprediction. If the first syntax element indicates that the combination prediction is applied to the current block, then the inter-prediction block and intra-prediction block of the current block are generated. A video signal processing device that generates a combined prediction block of the current block by weighting the inter prediction block and the intra prediction block.
The aforementioned processor, The residual block of the current block is decoded, The video signal processing apparatus according to claim 8, wherein the current block is restored using the combination prediction block and the residual block.
The aforementioned processor, If the first syntax element indicates that the combination prediction is not applied to the current block, a second syntax element is obtained indicating whether or not a sub-block transformation is applied to the current block. The video signal processing apparatus according to claim 9, wherein the subblock conversion indicates a conversion mode in which the conversion is applied to any one of the subblocks of the current block which is divided horizontally or vertically.
The video signal processing apparatus according to claim 10, wherein if the second syntax element is not present, the value of the second syntax element is inferred to be 0.
The video signal processing apparatus according to claim 8, wherein, if the first syntax element indicates that the combination prediction is applied to the current block, the intra-prediction mode for the intra-prediction for the current block is set to planar mode.
The video signal processing apparatus according to claim 8, wherein the processor sets the positions of the left and upper peripheral blocks referenced for the combination prediction, and the positions of the left and upper peripheral blocks are the same as the positions referenced by the intra prediction.
The video signal processing apparatus according to claim 13, wherein the positions of the left peripheral block and the upper peripheral block are determined using a scaling factor variable determined by the color component index value of the current block.
A video signal processing method, Currently, the block is being determined as to whether merge mode is applied or not; If a merge mode is applied to the current block, the step is to decode a first syntax element indicating whether or not a combined prediction is applied to the current block, wherein the combined prediction indicates a prediction mode that combines inter-prediction and intra-prediction; A video signal processing method comprising: generating an interprediction block and an intraprediction block of the current block when the first syntax element indicates that the combined prediction is applied to the current block; and generating a combined prediction block of the current block by weighting the interprediction block and the intraprediction block.

Description

This invention relates to a video signal processing method and apparatus, and more particularly, to a video signal processing method and apparatus for encoding or decoding a video signal. Compression coding refers to a series of signal processing techniques for transmitting digitized information over communication lines or storing it in a format suitable for storage media. While compression coding can target various media such as audio, video, and text, the technique specifically for video compression is called video compression. Compression coding of video signals is performed by removing excess information by considering spatial, temporal, and probabilistic correlations. However, with the recent development of diverse media and data transmission systems, there is a demand for more efficient video signal processing methods and devices. This is a schematic block diagram of a video signal encoding device according to one embodiment of the present invention.This is a schematic block diagram of a video signal decoding device according to one embodiment of the present invention.This figure shows an example where a coding tree unit is divided into coding units within a picture.This figure shows one embodiment of a method for signaling the division of quad trees and multi-type trees.This figure provides a more detailed illustration of the intra-prediction method according to an embodiment of the present invention.This figure provides a more detailed illustration of the intra-prediction method according to an embodiment of the present invention.An interpretation method according to one embodiment of the present invention is illustrated.This diagram specifically illustrates how an encoder converts residual signals.This diagram specifically illustrates how an encoder and decoder inversely transform the conversion coefficients to obtain a residual signal.This figure illustrates a motion vector signaling method according to one embodiment of the present invention.This figure illustrates an example of a signaling method for adaptive motion vector resolution information according to one embodiment of the present invention.This figure illustrates a history-based motion vector prediction (HMVP) method according to one embodiment of the present invention.This figure illustrates a method for updating an HMVP table according to one embodiment of the present invention.This figure illustrates a method for updating an HMVP table according to one embodiment of the present invention.This figure illustrates a method for updating an HMVP table according to one embodiment of the present invention.This figure illustrates a method for updating an HMVP table according to one embodiment of the present invention.This figure illustrates a method for updating an HMVP table according to one embodiment of the present invention.This figure illustrates a pruning process according to one embodiment of the present invention.This figure illustrates a method for adding HMVP candidates according to one embodiment of the present invention.This figure illustrates a merge sharing node according to one embodiment of the present invention.This figure illustrates an HMVP update method when a shared list according to one embodiment of the present invention is used.This figure illustrates a method for updating an HMVP table based on motion information of blocks within a merge shared node according to one embodiment of the present invention.This figure illustrates an HMVP update method when a shared list according to one embodiment of the present invention is used.This figure illustrates a method for updating an HMVP table based on motion information of blocks within a merge shared node according to one embodiment of the present invention.This figure illustrates a method for processing a video signal based on HMVP according to one embodiment of the present invention.This is a diagram illustrating a multi-hypothesis prediction method according to one embodiment of the present invention.This figure shows a method for determining multiple assumption prediction modes according to one embodiment of the present invention.This figure shows a method for determining multiple assumption prediction modes according to one embodiment of the present invention.This figure shows the peripheral position referenced in the multiple assumption prediction according to one embodiment of the present invention.This figure shows a method for referencing peripheral modes according to one embodiment of the present invention.This figure shows a method for generating a candidate list according to one embodiment of the present invention.This figure shows a method for generating a candidate list according to one embodiment of the present invention.This figure shows the peripheral position referenced in the multiple assumption prediction according to one embodiment of the present invention.This figure shows a method for referencing peripheral modes according to one embodiment of the prese