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Inter-frame prediction method and device

An inter-frame prediction and prediction block technology, applied in the field of video coding and decoding, can solve problems such as the inability to meet the requirements of motion vector prediction accuracy, and achieve the effects of reliable time-domain reference blocks, reducing complexity, and improving adaptability

Active Publication Date: 2020-03-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, several existing inter-frame prediction modes, such as merge mode (Merge mode), skip mode (Skip mode) and advanced motion vector prediction mode (AMVP mode) are still unable to meet the requirements of accurate motion vector prediction in different application scenarios. sexual demands

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Embodiment Construction

[0097] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0098] figure 1 It is a block diagram of an example video decoding system 1 described in the embodiment of this application. As used herein, the term "video coder" refers generally to both video encoders and video decoders. In this application, the term "video coding" or "coding" may generally refer to video encoding or video decoding. The video encoder 100 and the video decoder 200 of the video decoding system 1 are used to predict the currently decoded image block according to various method examples described in any one of the multiple new inter-frame prediction modes proposed in this application The motion information of its sub-blocks, such as the motion vector, makes the predicted motion vector as close as possible to the motion vector obtained by using the motion es...

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Abstract

The embodiment of the invention relates to an inter-frame prediction method and device, and the method comprises the steps: determining the size of a basic prediction block in a to-be-processed imageblock, wherein the size is used for determining the position of the basic prediction block in the to-be-processed image block; depending on the position, determining a first reference block and a second reference block of the basic prediction block, wherein the left boundary line of the first reference block is collinear with the left boundary line of the basic prediction unit, the upper boundaryline of the second reference block is collinear with the upper boundary line of the basic prediction unit, the first reference block is adjacent to the upper boundary line of the to-be-processed imageblock, and the second reference block is adjacent to the left boundary line of the to-be-processed image block; and performing weighted calculation on one or more of the motion vector corresponding to the first reference block, the motion vector corresponding to the second reference block and the motion vector corresponding to the original reference block having a preset position relationship with the to-be-processed image block to obtain a motion vector corresponding to the basic prediction block.

Description

technical field [0001] The present application relates to the technical field of video coding and decoding, and in particular to a method and device for inter-frame prediction of video images. Background technique [0002] Digital video capabilities can be incorporated into a wide variety of devices, including digital television, digital broadcast systems, wireless broadcast systems, personal digital assistants (PDAs), laptop or desktop computers, tablet computers, electronic book readers, Digital cameras, digital recording devices, digital media players, video game devices, video game consoles, cellular or satellite radiotelephones (so-called "smart phones"), video teleconferencing devices, video streaming devices and the like . Digital video devices implement video compression techniques such as those defined in MPEG-2, MPEG-4, ITU-T H.263, ITU-T H.264 / MPEG-4 Part 10 Advanced Video Coding (AVC), Video compression techniques described in the video coding standard H.265 / Hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/107H04N19/122H04N19/124H04N19/13H04N19/176H04N19/52H04N19/61H04N19/96H04N21/2343H04N21/4402
CPCH04N19/107H04N19/122H04N19/124H04N19/13H04N19/176H04N19/52H04N19/61H04N19/96H04N21/2343H04N21/4402
Inventor 张娜郑建铧
Owner HUAWEI TECH CO LTD