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Moving target anti-fusion shielding tracking algorithm

A moving target and tracking algorithm technology, applied in the field of intelligent video target tracking algorithm, can solve the problem of real-time updating of target templates

Inactive Publication Date: 2012-10-17
BEIJING SISHIELD SECURITY
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AI Technical Summary

Problems solved by technology

In order to solve the problem of target template update and poor real-time performance of this method, the present invention constructs an improved anti-occlusion tracking method for moving targets, which simply classifies them through the motion information of all occluded targets, and separates active occlusions The target and the passive occlusion target adopt the improved overall template matching method and the sub-block template matching method respectively, and use the Kalman model to complete the tracking of the moving target under the condition of complete occlusion

Method used

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  • Moving target anti-fusion shielding tracking algorithm
  • Moving target anti-fusion shielding tracking algorithm

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Embodiment Construction

[0039] Such as figure 1 Shown, the concrete implementation method of the present invention is as follows:

[0040] (1) Determine whether the target is in the fusion occlusion situation:

[0041] ① Calculate the centroid distance between the current target and the historical target in the x and y directions: ε x , ε y ;

[0042] ② Calculate the average rectangle width and height of the current target and the historical target:

[0043] ③ Calculate the deviation rate between the current target and the historical target in the x direction and y direction:

[0044]④ Count the number of historical targets that meet the following conditions

[0045] Sum=#{μ x >τ:μ y >τ} (1)

[0046] In the formula, τ is the threshold of the deviation rate, the value range is (0, 1), and the initial setting is 0.85; the symbol #() is the statistical accumulation operation of the number that meets the conditions in the brackets; Sum is the number of historical targets that meet the conditi...

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Abstract

The invention discloses a moving target anti-fusion shielding tracking algorithm which specifically comprises the following steps of: firstly, judging whether the current moving target is in a fusion shielding state according to the target shielding judgment criterion; classifying all shielding targets according to the target moving information, and separating the active shielding targets and the passive shielding targets; obtaining the real positions of the targets by different template matching algorithms for different types of shielding targets respectively, wherein an overall template matching method based on fast Fourier transform and integral images is adopted for the active shielding targets, and an improved sub-block template matching method is adopted for the passive shielding targets; matching and estimating the moving displacement of the sub-block template by use of a target prospect adaptive block to realize the adaptive update of the template; and finally, realizing the anti-fusion shielding tracking of the target by combining the target overall template matching based on fast Fourier transform and integral images and the adaptive multi-sub-block template matching.

Description

technical field [0001] The invention relates to an intelligent video target tracking algorithm, which is suitable for visible light images and realizes the tracking of moving targets in the case of fusion occlusion. Background technique [0002] Moving object tracking technology is one of the core topics in the field of computer vision, which has very important significance and extensive practical value. It integrates advanced technologies and research results in related fields such as image processing, pattern recognition, artificial intelligence, automatic control, and computer applications. The essence of moving target tracking is a technology that automatically recognizes targets from image signals in real time, extracts target location information, and automatically tracks targets. Its difficulty lies in the loss of information in the process of image signal acquisition and the complex application environment, especially when the target is often occluded by other objec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20
Inventor 李铁军
Owner BEIJING SISHIELD SECURITY
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