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Motion vector decoding method, and decoder

A motion vector and decoding method technology, applied in the field of motion vector decoding methods and decoders, can solve the problems of image distortion of adjacent planes, inaccurate prediction information, affecting the MV correlation of adjacent blocks, etc.

Active Publication Date: 2018-06-29
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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  • Motion vector decoding method, and decoder
  • Motion vector decoding method, and decoder
  • 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 invention discloses a motion vector decoding method, and a decoder. The method comprises the following steps: determining a predicted motion vector of a to-be-decoded unit according to a motion vector of a prediction unit of the to-be-decoded unit; when at least one of a surface image where a first reference unit is located and the surface image where the prediction unit is located does not belong to the same orientation surface image as the surface image where the to-be-decoded unit is located, performing first update on the predicted motion vector, wherein the first update is used for determining a mapping vector of the predicted motion vector on a plane of the surface image where the to-be-decoded unit is located; and obtaining the motion vector of the to-be-decoded unit according to the predicted motion vector subjected to the first update. By adoption of the motion vector decoding method disclosed by the invention, the encoding 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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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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