A motion vector derivation method, device and electronic equipment
A motion vector and motion vector prediction technology, applied in the field of video coding and decoding, can solve problems such as reducing the accuracy of inter-frame prediction and affecting coding efficiency, and achieve the effect of improving accuracy and coding efficiency.
Active Publication Date: 2021-09-21
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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[0004] In view of this, the purpose of the present invention is to provide a motion vector derivation method, device and electronic equipment to solve the problem of deriving motion information in the prior art by only using the motion information in the coded adjacent blocks or images, which reduces the The accuracy of inter-frame prediction affects the coding efficiency
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[0024] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments of this specification, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0025] Commonly used methods for compressing video data include HEVC, AVS, and H.264 / MPEG-4AVC. According to these methods, a picture is divided into multiple macroblocks to encode the image, and inter-frame prediction or intra-frame prediction is used to generate prediction blocks. , thus encoding the corresponding macroblock. The difference between...
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The embodiments of this specification provide a motion vector derivation method, device and electronic equipment. The method includes: obtaining a spatial motion vector and a temporal motion vector prediction of adjacent blocks of a coding unit in a predetermined direction; performing a filtering operation on the spatial motion vector and temporal motion vector prediction to obtain the filtered phase The spatial motion vector and temporal motion vector prediction of adjacent blocks; according to a predetermined inter-frame prediction mode, using the filtered spatial motion vector and temporal motion vector prediction of adjacent blocks and the current block in the coding unit Coordinate position, determine the reference motion vector of the current block in its four side directions; derive the motion vector of the current block according to the reference motion vector and the coordinate position of the current block in the coding unit . By adopting the technical solution of the present application, the accuracy of inter-frame prediction can be improved, and the coding efficiency can be further improved.
Description
technical field [0001] This specification relates to the technical field of video encoding and decoding, and in particular to a motion vector derivation method, device and electronic equipment. Background technique [0002] Since there is a strong temporal correlation between several consecutive frames of video in the video, inter-frame prediction technology can be used to reduce the redundancy between video frames by using the temporal correlation between video frames. In order to achieve the purpose of effectively removing video temporal redundancy. In the existing inter-frame prediction technology, taking the Skip / Direct mode as an example, the Skip / Direct mode directly derives the current coding unit by borrowing the motion information of the coded adjacent blocks in the spatial domain and the motion information in the coded image in the time domain. sports information. Therefore, although the Skip / Direct mode improves the coding efficiency to a certain extent, this me...
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IPC IPC(8): H04N19/109H04N19/117H04N19/176H04N19/513
CPCH04N19/176H04N19/109H04N19/513H04N19/117H04N19/105H04N19/137H04N19/159H04N19/80
Inventor 王荣刚谢熙范逵高文
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL