Motion estimation method, motion estimation system and display terminal
A technology of motion estimation and motion vector, applied in the field of image processing, can solve the problems of too many local optimal search points and slow operation speed, and achieve the effect of speeding up motion estimation, ensuring accuracy, and reducing the number of search points
Inactive Publication Date: 2010-01-06
SHENZHEN JIUZHOU ELECTRIC
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[0008] The purpose of the embodiments of the present invention is to provide a motion estimation method, aiming to solve the problem of being easily trapped in a local optimum or having many search points and slow operation speed when performing motion estimation
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[0032] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0033] In the embodiment of the present invention, after determining the initial search point, first search according to the preset multi-level flat hexagon template to obtain the coarse search point, and then search according to the coarse search point to obtain the best search point, according to the best search Point acquisition of the motion vector realizes the reduction of the number of search points while ensuring the accuracy rate, which greatly accelerates the search speed.
[0034] According to the experience of motion estimation of video images, the probability of occurrence of the mo...
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The invention provides a motion estimation method, a motion estimation system and a display terminal, belonging to the field of image processing. The method comprises the following steps: determining an original search point; searching according to the original search point and a preset multilayer flat hexagonal template and obtaining a rough search point; searching according to the rough search point and obtaining an optimal search point; and obtaining a motion vector according to the optimal search point. After the original search point is determined, large-scale and irregular point search is firstly carried out according to the multilayer flat hexagonal template, the further search is then carried out to obtain the optimal search point, and the motion vector is obtained according to the optimal search point, thereby the accuracy ratio is ensured while the number of search point is reduced, and the motion estimation speed is effectively accelerated.
Description
Technical field [0001] The present invention belongs to the field of image processing, and particularly relates to a motion estimation method, system and display terminal. Background technique [0002] H.264 / AVC is the hot spot of video compression coding research in recent years. It was officially announced by ITU-T / ISO in 2003. Compared with previous standards, due to its excellent performance, this standard has been widely accepted internationally. It is highly valued and welcomed by people as a new generation video coding standard. Specifically, compared with H.263 or MPEG-4, under the same quality, its digital rate can be reduced by about half; in other words, under the same bit rate, its signal-to-noise ratio is significantly improved. The standard uses technologies such as intra-frame coding, multi-reference frame and multi-macroblock division modes, and 1 / 4 pixel point motion compensation, which greatly improves its coding efficiency. At the same time, however, the comp...
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IPC IPC(8): H04N7/26H04N7/32H04N19/533
Inventor 杨碧玲卢文涛
Owner SHENZHEN JIUZHOU ELECTRIC