Method and apparatus for encoding/decoding image

A technology of a decoding method and an encoding method, which is applied in the field of image encoding/decoding methods and devices, and can solve the problem that the channel cannot fully satisfy the amount of multimedia data, etc.

Pending Publication Date: 2021-01-29
IND ACAD COOP GRP OF SEJONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current development speed of channel bandwidth is difficult to fully meet the rapidly increasing amount of multimedia data.

Method used

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  • Method and apparatus for encoding/decoding image
  • Method and apparatus for encoding/decoding image
  • Method and apparatus for encoding/decoding image

Examples

Experimental program
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Embodiment 1

[0253]Embodiment 1 relates to a prediction information and additions using inter-picture prediction modes (skip (SKIP) mode, merge (MERGE) mode, advanced motion vector prediction (AMVP) mode, decoder-side motion vector derivation (DMVD) mode) The prediction information of the inter-picture prediction mode is a method of generating weights and prediction blocks.

[0254]Before the weighting and prediction block generation method is specifically described, the prediction mode used to generate the prediction information required in this embodiment will first be described in detail. The skip (SKIP) mode, the merge (MERGE) mode, and the advanced motion vector prediction (AMVP) mode are the same as the above description. The decoder-side motion vector derivation (DMVD) mode refers to a method of generating prediction blocks by generating the same motion information without encoding / decoding motion information in a video encoding device and a video decoding device.

[0255]Figure 18 It is an exe...

Embodiment 2

[0294]In this embodiment, a method of generating weights and prediction blocks using the prediction information of the intra prediction mode and the prediction information of the added intra prediction mode will be described in detail.

[0295]Before the weighting and prediction block generation method is specifically described, the prediction mode used to generate the prediction information required in this embodiment will first be described in detail. The decoder-side Intra Mode Derivation (DIMD) mode refers to a method of generating prediction blocks by generating the same intra prediction mode without encoding / decoding intra prediction information in the video encoding device and the video decoding device.

[0296]Figure 22 It is a schematic diagram for explaining the template matching technology that uses the template area in the reconstruction area around the current block in the intra prediction mode.

[0297]inFigure 22 In, the template area is determined from the reconstruction area...

Embodiment 3

[0315]In this embodiment, the method of generating weights and prediction blocks using the prediction information of the inter prediction mode and the prediction information of the added intra prediction mode or the prediction information of the intra prediction mode and the added inter prediction information will be performed. Detailed explanation.

[0316]In the case where the main prediction information is an intra prediction mode generated by a normal inter (Normal Intra) mode or a decoder-side intra mode derivation (DIMD) mode, it can be used in skip (SKIP), merge (MERGE), After deciding the best prediction mode most suitable for auxiliary prediction information in Advanced Motion Vector Prediction (AMVP) and Decoder Side Motion Vector Derivation (DMVD) modes, the motion information of the corresponding mode is determined as auxiliary prediction information. The motion information of the auxiliary prediction information may be all transmitted in the same manner as the main predict...

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Abstract

The present invention relates to an image encoding method and an image decoding method, and the image decoding method according to one embodiment of the present invention may comprise the steps of: determining an initial motion vector of a current block by using a motion vector of a reconstructed area; searching for a motion vector of the current block on the basis of the initial motion vector; and generating a prediction sample of the current block by using the motion vector, wherein the initial motion vector includes a motion vector in a past direction and a motion vector in a future direction.

Description

Technical field[0001]The present invention relates to an image encoding / decoding method and device, and more particularly, to a prediction method or device using multiple prediction blocks generated based on multiple prediction information.Background technique[0002]In recent years, the demand for multimedia data such as videos on the Internet is rapidly increasing. However, the current channel bandwidth (Bandwidth) development speed cannot fully meet the rapidly increasing amount of multimedia data. To this end, the International Organization for Standardization, namely the Video Coding Expert Group (VCEG) of the International Telecommunication Standardization Sector (ITU-T) and the Moving Picture Expert Group (MPEG) of the International Organization for Standardization / International Electrotechnical Commission (ISO / IEC) , Moving Picture Expert Group) formulated the first edition of the video compression standard, High Efficiency Video Coding (HEVC) in February 2014.[0003]In High Ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/11H04N19/119H04N19/176H04N19/132H04N19/13H04N19/105H04N19/593H04N19/136H04N19/139
CPCH04N19/105H04N19/119H04N19/593H04N19/176H04N19/11H04N19/107H04N19/147H04N19/186H04N19/46H04N19/513H04N19/56H04N19/577H04N19/52H04N19/527
Inventor 文柱禧元栋载河在玟任星元
Owner IND ACAD COOP GRP OF SEJONG UNIV
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