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Motion Estimation Method and Device

A technology of motion estimation and motion vector, which is applied in the field of image processing and can solve problems such as long processing time

Inactive Publication Date: 2016-05-04
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Full search checks all possible motion vector candidates and provides the most accurate results, but takes very long to process

Method used

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  • Motion Estimation Method and Device
  • Motion Estimation Method and Device

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Embodiment Construction

[0013] Features and exemplary embodiments of various aspects of the invention will be described in detail below. The following description covers numerous specific details in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a clearer understanding of the present invention by showing examples of the present invention. The present invention is by no means limited to any specific configuration and algorithm presented below, but covers any modification, replacement and improvement of related elements, components and algorithms without departing from the spirit of the present invention.

[0014] In order to perform a full search on a reference frame within a limited time to find out the best motion vector of the current macroblock, the present invention proposes...

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Abstract

The invention discloses a motion estimation method and a motion estimation device. The motion estimation method comprises the following steps: respectively conducting sampling on pixels of a current frame and a reference frame, and obtaining a current image corresponding to the current frame and a reference image corresponding to the reference frame; conducting full search on the reference image, finding out an optimal movement vector of each fundamental pixel unit of the current image, and using the optimal movement vector as the optimal movement vector of multi-pixel accuracy of each macro block of the current frame, wherein each fundamental pixel unit of the current image corresponds to each macro block of the current frame, and each fundamental pixel unit of the reference image corresponds to each macro block of the reference frame.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to a motion estimation method and device. Background technique [0002] Motion Estimation (MotionEstimation) is a technique widely used in video processing (eg, video coding, video de-interlacing). The basic idea of ​​motion estimation is to divide each frame in the image sequence into many non-overlapping macroblocks, and consider that the displacement of all pixels in each macroblock is the same, and then within a certain search range of the reference frame according to Certain matching criteria are used to find out the block most similar to the current macroblock (ie, the matching block of the current macroblock), and the relative displacement between the matching block and the current macroblock is the motion vector of the current macroblock. [0003] During video compression, only the motion vector and residual data of the current macroblock relative to its matching blo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/176H04N19/182H04N19/513H04N19/56
Inventor 付轩郑艳朱建清
Owner FUJITSU LTD
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