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Method for decoding motion vectors

A motion vector and motion vector prediction technology, which is applied in the direction of digital video signal modification, electrical components, image communication, etc., can solve problems such as increasing compression efficiency, and achieve the effect of increasing error robustness

Active Publication Date: 2017-04-05
SAMSUNG ELECTRONICS CO LTD
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AI Technical Summary

Problems solved by technology

Since the motion vectors of individual blocks occupy a considerable portion of the encoded bitstream, the information about the motion vectors assigned to individual blocks will be reduced to increase compression efficiency

Method used

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  • Method for decoding motion vectors

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specific Embodiment approach

[0043] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0044] figure 1 is a block diagram of a video encoding device 100 according to an embodiment of the present invention.

[0045] The video encoding apparatus 100 includes a maximum coding unit divider 110 , a coding unit determiner 120 and an output unit 130 .

[0046]The maximum coding unit splitter 110 may split a current picture of an image based on a maximum coding unit that is a coding unit of a maximum size. If the current picture is larger than the maximum coding unit, the image data of the current picture may be divided into at least one maximum coding unit. The largest coding unit according to an embodiment of the present invention may be a data unit with a size of 32×32, 64×64, 128×128, 256×256, etc., wherein the shape of the data unit has a width of several powers of 2 and A square with a length greater than 8. The image data may be ...

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Abstract

Methods and apparatus for encoding and decoding motion information are provided. The method of encoding motion information includes: obtaining a motion information candidate by using motion information of a prediction unit temporally or spatially correlated with a current prediction unit; when the number of motion information included in the motion information candidate is less than a predetermined number n, Selectable motion information is added to the motion information candidates so that the number of motion information included in the motion information candidates reaches a predetermined number n; motion information on the current prediction unit is determined from the n motion information candidates; the determined motion information will be indicated The index information of is encoded as the motion information of the current prediction unit.

Description

technical field [0001] The present invention relates to a method and device for encoding and decoding video, and more particularly, to a method and device for efficiently encoding and decoding motion information of a current prediction unit. Background technique [0002] Due to the recent increase in high-definition video content, for video codecs having higher encoding efficiency than video codecs according to the prior art such as MPEG-4 H.264 / MPEG-4 Advanced Video Coding (AVC) demand is increasing. [0003] Motion compensation is a technique for removing temporal redundancy in video signals. Through motion compensation, a residual signal that is a difference between an original signal and a reference signal indicated by a motion vector is transmitted, thereby increasing compression efficiency of video encoding. In general, as a result of the encoding of each block obtained by motion compensation, the motion vector and residual value of each block are sent to the decoder...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/56
CPCH04N19/105H04N19/139H04N19/176H04N19/52H04N19/65H04N19/109H04N19/147H04N19/166H04N19/19H04N19/51H04N19/70H04N19/521H04N19/517H04N19/513
Inventor 李泰美陈建乐
Owner SAMSUNG ELECTRONICS CO LTD
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