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Motion tracking method

A technology of motion tracking and maximum likelihood method, applied in the field of multi-person motion tracking, can solve problems such as unsatisfactory effects in multi-person situations, and achieve the effect of motion tracking and improving accuracy

Inactive Publication Date: 2012-09-12
BEIJING CRYSTAL TECH TRAINING LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Whether the traditional motion tracking method adopts the method of image difference or other methods, the effect of the multi-person situation is not ideal

Method used

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Embodiment Construction

[0012] This law provides a motion tracking method, which includes the following steps.

[0013] Step 101, obtain the end point of the human body, and use the continuity of the position of the same feature point in time as the tracking basis, and use the maximum likelihood method to select the most likely end point of the human body at time t-1 at time t Location.

[0014] In a specific embodiment, the end points of the human body are the limbs and the head of the human body, and the method for obtaining the positions thereof specifically includes the following steps.

[0015] Step 1011, calculate the outline center of gravity of each individual individual outline.

[0016] In a specific embodiment, the calculation of the center of gravity of the contour of a single individual adopts calculating the arithmetic mean of the coordinate values ​​of each point on the contour as the center of gravity of the contour of the single individual. For a single individual without occlusion...

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Abstract

Provided in the invention is motion tracking method, comprising the following steps: obtaining a human body end point; and by taking continuity of a position of a same characteristic point in terms of time as a tracking basis, selecting a maximum likelihood position of the human body end point at a t-1 time by employing a maximum likelihood method at a t time.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method for multi-person motion tracking. technical background [0002] Moving target tracking is an important research topic in the development of digital video technology. The so-called moving target tracking is to use the effective characteristics of the target on the basis of moving target detection, and use the appropriate matching algorithm to find the target template in the sequence image. The position of the most similar image is simply to locate the target. In practical applications, moving target tracking can not only provide the target's trajectory and accurately locate the target, provide a reliable data source for the next step of target behavior analysis and understanding, but also provide assistance for moving target detection. [0003] No matter the traditional motion tracking method adopts the method of image difference or other methods, the effect for the multi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20
Inventor 宋滢周超峰孙浩惠
Owner BEIJING CRYSTAL TECH TRAINING LTD
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