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Motion vector acquisition method, acquisition device, video codec and method thereof

A technology of motion vector and acquisition method, applied in digital video signal modification, electrical components, image communication, etc.

Active Publication Date: 2015-03-18
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present application provides a motion vector acquisition method, acquisition device, video codec and its method, to solve the problem that the prior art needs to further improve the coding efficiency

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  • Motion vector acquisition method, acquisition device, video codec and method thereof
  • Motion vector acquisition method, acquisition device, video codec and method thereof
  • Motion vector acquisition method, acquisition device, video codec and method thereof

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Embodiment Construction

[0049] In the following description, for purposes of illustration rather than limitation, specific details such as specific system architectures, interfaces, and techniques are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0050] The following description will be made in conjunction with the accompanying drawings and specific implementation manners.

[0051] see figure 1 , is a schematic flow chart of the first embodiment of the motion vector acquisition method of the present invention. The method for obtaining the motion vector includes the following steps:

[0052] Step S11: Obtain the motion info...

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Abstract

Disclosed are an acquisition method and acquisition device for a motion vector, and a video coder and decoder and a method thereof. The acquisition method comprises: acquiring motion information about adjacent blocks of a current block in a current frame and motion information about a first reference block having the same position as the current block in a first reference frame, the motion information comprising a forward motion vector and a forward reference identifier, and a backward motion vector and a backward reference identifier; successively, according to the forward motion vector in each piece of motion information, going to the forward reference frame indicated by the forward reference identifier to determine a forward matching block of the current block, and according to the backward motion vector, going to the backward reference frame indicated by the backward reference identifier to determine a backward matching block of the current block; detecting a similarity between the forward matching block and the backward matching block which are determined each time; and setting the motion information corresponding to the maximum similarity as the motion information about the current block. By implementing the present application, the calculation complexity can be reduced, and the problem in the prior art that the encoding efficiency needs to be further increased can be solved.

Description

technical field [0001] The present application relates to the technical field of video encoding and decoding, in particular to a motion vector acquisition method and an acquisition device thereof, and also to a video encoding method, a video decoding method, a video encoder, and a video decoder. Background technique [0002] There are generally four types of redundancy in video sequences: spatial redundancy, temporal redundancy, visual redundancy, and coding redundancy. The purpose of video coding is to eliminate the above redundancy to achieve video compression. In the video encoding stage, it is necessary to predict the motion vector of the current block in the current frame to be encoded during inter-frame encoding, calculate the residual value of the current block according to the motion vector, encode the residual value after motion compensation, and then decode the video In the stage, the reference block is calculated by using the predicted motion vector, and the refe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/513H04N19/573H04N19/577
CPCH04N19/567
Inventor 姜晓龙马思伟吕卓逸
Owner HUAWEI TECH CO LTD
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