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Target tracking-based motion detection method

A technology of motion detection and target tracking, which is applied in the field of motion detection based on target tracking, and can solve problems such as no moving target tracking processing

Active Publication Date: 2018-06-22
HAOYUN TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method of motion detection based on target tracking, aiming to solve the technical problem of not tracking the detected moving target

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Embodiment Construction

[0062] Such as figure 1 As shown, the motion detection method based on target tracking provided by the present invention is described in detail as follows:

[0063] Step S01, acquire a frame of image F n-1 , for F n-1 Perform grayscale extraction to obtain a grayscale image G n-1 , for G n-1 Perform m-fold reduction processing to obtain a reduced grayscale image In the embodiment of the present invention, the reduction factor m is set to 4. The reduction factor m can also be set according to the actual image resolution. After experiments, the resolution of the reduced image should be greater than 100*100, which can reduce the detection complexity and ensure the detection accuracy. After step S01 is completed, proceed to S02 to wait for the next frame of image processing.

[0064] Step S02, with F n-1 After an interval of time t, get the next frame of image F n , for F n Perform grayscale extraction to obtain a grayscale image G n , for G n Perform m-fold reduction...

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Abstract

The invention is suitable for the technical field of video camera monitoring and video image processing, and provides a target tracking-based motion detection method. The motion detection method comprises the following steps of: obtaining two images with a time interval t, and extracting greyscale maps of the two images; shrinking the two greyscale maps by m times and carrying out subtraction to obtain a difference map; carrying out dual-threshold binarization on the difference map so as to obtain two binary images B1n and B2n; processing the B1n and extracting a foreground; carrying out screening and associated tracking on the extracted foreground; and analyzing the associated tracking information to detect a final moving target. The method has the beneficial effects of realizing relatively low operation complexity, ensuring the detection correctness, effectively solving the false alarm caused by unrelated interference factors such as light change, image noise and signs of trouble inexisting methods, having relatively low requirements for hardware resources such as memories and CPUs, and being strong in implementation.

Description

technical field [0001] The invention belongs to the technical field of video camera monitoring and video image processing, and in particular relates to a motion detection method based on target tracking. Background technique [0002] Motion detection is a new camera monitoring technology, it is also called motion detection technology. This technology has high intelligence. It can compare the image changes in the monitoring area in real time. Once the alarm threshold is triggered, it will automatically alarm. [0003] The motion detection methods can be mainly divided into three types: optical flow, background subtraction and temporal differencing. The optical flow method can extract the optical flow vector formed by the relative motion of the object and the image background, so as to obtain the complete information of the moving object. This method has high accuracy, but it has a large amount of calculation and is not easy to apply in real time. In addition, it is very sens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/254
CPCG06T2207/20032G06T2207/20036G06T7/254
Inventor 麦全深茅庆江叶展行杨春霞
Owner HAOYUN TECH CO LTD