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Coding and decoding method, device and equipment

A decoding method and preconfigured technology, applied in the field of codec, to save a lot of bits, solve the problem of transmitting a large amount of motion information, and improve the encoding performance

Active Publication Date: 2021-12-03
HANGZHOU HIKVISION DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the current coding unit is divided into multiple sub-blocks, additional bit overhead will be generated

Method used

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  • Coding and decoding method, device and equipment
  • Coding and decoding method, device and equipment
  • Coding and decoding method, device and equipment

Examples

Experimental program
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Embodiment 1

[0068] Embodiment 1: see Figure 4 As shown, it is a schematic flow chart of the encoding and decoding method proposed in the embodiment of the present application. The method can be applied to the decoding end or the encoding end, and the method can include the following steps:

[0069] Step 401 , for any motion information angle prediction mode of the current block, based on the preconfigured angle of the motion information angle prediction mode, select a plurality of surrounding matching blocks pointed to by the preconfigured angle from surrounding blocks of the current block.

[0070] The motion information angle prediction mode is used to indicate the pre-configured angle, select the surrounding matching blocks from the surrounding blocks of the current block for the sub-region of the current block according to the pre-configured angle, and determine one or more of the current block according to the motion information of the surrounding matching blocks Motion information,...

Embodiment 2

[0107] Embodiment 2: Based on the same application concept as the above-mentioned method, see Figure 6 As shown, it is a schematic flow chart of the encoding and decoding method proposed in the embodiment of the present application. This method can be applied to the encoding end, and the method can include:

[0108] In step 601, the encoder builds a motion information prediction mode candidate list for the current block, and the motion information prediction mode candidate list may include at least one motion information angle prediction mode. Of course, the motion information prediction mode candidate list may also include other types of motion information prediction modes (obtained in a conventional manner), which is not limited.

[0109] Exemplarily, a motion information prediction mode candidate list can be constructed for the current block, that is, all sub-regions in the current block can correspond to the same motion information prediction mode candidate list; or, mult...

Embodiment 3

[0120] Embodiment 3: based on the same application concept as the above-mentioned method, see Figure 7 As shown, it is a schematic flow chart of the encoding and decoding method proposed in the embodiment of the present application. The method can be applied to the decoding end, and the method can include:

[0121] In step 701, the decoder constructs a motion information prediction mode candidate list of the current block, and the motion information prediction mode candidate list may include at least one motion information angle prediction mode. Of course, the motion information prediction mode candidate list may also include other types of motion information prediction modes (obtained in a conventional manner), which is not limited.

[0122] In step 702, the decoder selects the target motion information prediction mode of the current block from the motion information prediction mode candidate list, and the target motion information prediction mode is the target motion inform...

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Abstract

The invention provides a coding and decoding method, device and equipment, and the method comprises the steps: a plurality of peripheral matching blocks to which a pre-configuration angle points are selected from peripheral blocks of a current block based on the pre-configuration angle of the motion information angle prediction mode for any motion information angle prediction mode of the current block; the plurality of peripheral matching blocks at least comprise a first peripheral matching block to be traversed and a second peripheral matching block to be traversed; and for the first peripheral matching block to be traversed and the second peripheral matching block to be traversed, if available motion information exists in the first peripheral matching block and the second peripheral matching block, when the motion information of the first peripheral matching block and the motion information of the second peripheral matching block are different, the motion information angle prediction mode is added to a motion information prediction mode candidate list of the current block. Through the scheme of the invention, the coding performance can be improved.

Description

technical field [0001] The present application relates to the technical field of encoding and decoding, and in particular, relates to an encoding and decoding method, device and equipment thereof. Background technique [0002] In order to achieve the purpose of saving space, video images are transmitted after being coded, and a complete video coding method may include processes such as prediction, transformation, quantization, entropy coding, and filtering. Predictive coding includes intra-frame coding and inter-frame coding. Inter-frame coding uses the correlation in the time domain of the video to predict the pixels of the current image using the pixels of the adjacent coded image, so as to effectively remove the redundancy of the video time domain. In inter-frame coding, a motion vector is used to represent the relative displacement between the current image block of the current frame video image and the reference image block of the reference frame video image. For examp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/176H04N19/184H04N19/51H04N19/105H04N19/44H04N19/147
CPCH04N19/176H04N19/184H04N19/51H04N19/105H04N19/44H04N19/147
Inventor 方树清陈方栋王莉
Owner HANGZHOU HIKVISION DIGITAL TECH
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