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A method for active tracking of moving targets based on edge-enhanced template matching

A moving target and active tracking technology, applied in image enhancement, image analysis, instruments, etc., can solve the problems of high difficulty in continuous and precise control of low-cost cameras, poor real-time tracking of moving targets in dynamic backgrounds, etc.

Active Publication Date: 2019-05-28
航天图景(北京)科技有限公司
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problems of poor real-time tracking of moving targets in the existing dynamic background and high difficulty in continuous and precise control of low-cost cameras, and propose an active tracking method for moving targets based on edge-enhanced template matching

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  • A method for active tracking of moving targets based on edge-enhanced template matching
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  • A method for active tracking of moving targets based on edge-enhanced template matching

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Embodiment Construction

[0050] The concrete realization process of the present invention is as follows:

[0051] (1) if figure 1 As shown, when the speed dome is still, it detects the moving target on the real-time collected video and automatically tracks all the moving targets in the field of view. The specific steps to start the active tracking mode by manually selecting the target of interest are as follows:

[0052] (11) When the ball machine is still, use the background modeling method to detect all moving objects in the static field of view, and track each moving object;

[0053] (12) generate a target ID number for each moving target tracked under the static background, and the foreground image of each target is displayed in columns on the right side of the current frame according to the size of the target ID number;

[0054] (13) Click on the foreground image of a target of interest, and start the target active tracking mode with the selected target as the tracking object, and actively track...

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Abstract

A moving-target active tracking method based on edge enhancement template matching comprises the following steps of firstly, using an improved tracking target selection criterion to select an interesting target, and establishing a gray template of a target and starting an active tracking mode; secondly, carrying out Gaussian smoothing, normalization and threshold processing on a target template and a search area, and then acquiring an edge-enhanced threshold image; and then using a method of matching and combining fast Fourier transform and an integral image fast template to realize rapid positioning of the target, and updating a target matching template; and finally, through calibrating a camera control instruction, forming a calibration instruction, then using Kalman filtering to predict a position of a next frame of the target, according to the calibration instruction, emitting a motion control instruction to a camera so as to control motion of a holder, and realizing active tracking of the target. In the invention, a common and non-feedback control holder can be controlled so that the active tracking of the target is realized.

Description

technical field [0001] The invention relates to an active tracking method of a moving target based on edge-enhanced template matching, which is suitable for a PTZ camera to actively track a moving target under a dynamic background on the basis of target detection. 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. Due to the superior performance of PTZ (Pan / Tilt / Zoom, pan / tilt omnidirectional (up and down, left and right) movement and lens zoom, zoom control) cameras, PTZ cameras have been more and more widely used in the field of computer vision in recent years. While PTZ camera rotation, translation, and telescopic performance bring a wider range of applications, it also poses new problems for target detection and tracking, including advanced technologies in related fields such as image processing, pattern recognition, artificial inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/292
CPCG06T2207/10016
Inventor 李铁军
Owner 航天图景(北京)科技有限公司
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