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A motion vector decoding method and decoder

A technology of motion vector and decoding method, which is applied in the field of motion vector decoding method and decoder, and can solve the problems of affecting coding efficiency, affecting MV correlation of adjacent blocks, image distortion of adjacent planes, etc.

Active Publication Date: 2019-11-05
HUAWEI TECH CO LTD
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Problems solved by technology

[0006] In the prior art, due to the multiple geometric transformations in the process from a spherical panoramic image to a polyhedral surface image, and then to a two-dimensional plane image, this process will cause geometric distortion between adjacent surface images
The geometric distortion will affect the correlation of the adjacent block MV, resulting in inaccurate MV prediction information of the block to be decoded based on the MV of the adjacent block, and ultimately affect the coding efficiency

Method used

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  • A motion vector decoding method and decoder
  • A motion vector decoding method and decoder
  • A motion vector decoding method and decoder

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Embodiment Construction

[0101] The technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings.

[0102] The decoder described in the embodiment of the present invention can be a module, device or device with image encoding or image decoding functions, for example, mobile phone, television, tablet computer, notebook computer, palmtop computer, mobile Internet device (English: mobile internet device , referred to as: MID), wearable devices (such as smart watches (such as iWatch, etc.), smart bracelets, pedometers, etc.), etc.

[0103] See Figure 9 , Figure 9 It is a schematic flowchart of a motion vector decoding method provided by an embodiment of the present invention, and the method includes but is not limited to the following steps.

[0104] Step S901: the decoder determines the predicted motion vector of the unit to be decoded according to the motion vector of the prediction unit of the unit to be decoded.

[0...

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Abstract

The embodiment of the present invention discloses a motion vector decoding method and a decoder. The method includes: determining the predicted motion vector of the unit to be decoded according to the motion vector of the prediction unit of the unit to be decoded; when the plane image where the first reference unit is located and When at least one of the plane images where the prediction unit is located and the plane image where the unit to be decoded is located does not belong to the same azimuth plane picture, the first update is performed on the predicted motion vector, and the first update is used to determine that the predicted motion vector is in A mapping vector on a plane where the plane image of the unit to be decoded is located; and a motion vector of the unit to be decoded is obtained according to the first updated predicted motion vector. By adopting the present invention, the coding efficiency can be improved.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a motion vector decoding method and a decoder. Background technique [0002] The current video coding technology roughly includes intra prediction (English: Intra Prediction), inter frame prediction (English: Inter Prediction), transformation (English: Transformation), quantization (English: Quantization), entropy coding (English: Entropy encode), Deblocking filtering (English: de-blocking filtering) and other links. At present, Merge technology and Advanced motion vector prediction (English: Advanced motion vector prediction, AMVP) technology belong to the currently widely used motion vector coding technology, and it is often necessary to determine the adjacent blocks of the block to be coded during the coding process , and then encode the motion vector of the block to be encoded according to the motion vector (English: motion vector, MV for short) of the adjacent block. Wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/513H04N19/52
CPCH04N19/513H04N19/52H04N19/597H04N19/137H04N19/176H04N19/61
Inventor 马祥杨海涛
Owner HUAWEI TECH CO LTD
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