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Moving point target detection method and system based on high-time-phase detection

A target detection and moving point technology, which is applied in image data processing, instrumentation, computing, etc., can solve the problems of low detection rate of moving point targets, high false alarm rate, and fast target speed, so as to improve detection accuracy and reduce false alarms. The effect of vigilance

Inactive Publication Date: 2019-08-06
NAT SPACE SCI CENT CAS
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Problems solved by technology

For the detection of large-scale and high-speed moving point targets based on visible light detection, the target speed is fast, the signal-to-noise ratio is low, and sometimes it will be completely lost in the background noise, so the existing common frame rate detection method is difficult to effectively detect the target
[0003] From the perspective of detection methods, the existing moving point target detection mainly focuses on the detection of information targets using spatial information or time-space domain. The time-space domain filtering method of detection before tracking, these methods can effectively detect moving point targets to a certain extent, but the detection rate of moving point targets with low signal-to-noise ratio is low and the false alarm rate is high

Method used

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  • Moving point target detection method and system based on high-time-phase detection
  • Moving point target detection method and system based on high-time-phase detection

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Embodiment 1

[0037] The basic principle of the present invention is to use a high frame rate camera to acquire a large number of sampled images in a short period of time, and the intensity value of each pixel will form a time sequence in time series. When the pixel passes by a target, a Transient fluctuations can fully mine the time-domain change information caused by the target passing through the pixel. The core problem of moving point target detection is transformed into a one-dimensional weak transient signal detection problem. Through the detection of transient signals, the detection of moving point targets can be realized. effective detection.

[0038] Such as figure 1 As shown, Embodiment 1 of the present invention proposes a method for detecting a moving point target based on high-phase detection, the method comprising:

[0039] Step 1) Use a visible light high frame rate camera to collect data on the target; obtain the image sequence taken by the high frame rate camera, and divid...

Embodiment 2

[0062] Such as figure 2 As shown, Embodiment 2 of the present invention proposes a moving point target detection system based on high-phase detection, and the system includes: a high frame rate image acquisition module, a data acquisition and storage module, and a target detection and trajectory generation module;

[0063] A high frame rate image acquisition module, configured to acquire an image sequence taken by a high frame rate camera, where the frame rate sampled by the high frame rate camera is greater than or equal to 100 frames per second;

[0064] The data acquisition and storage module is used to divide the image sequence into several basic processing units and store them;

[0065] The target detection and trajectory generation module is used to read the image sequence of each basic processing unit in the data acquisition and storage module, and use the time-domain transient fluctuation information caused by the target passing through the pixel to detect the target ...

Embodiment 3

[0067] Embodiment 3 of the present invention proposes a computer device, including a memory, a processor, and a computer program stored on the memory and operable on the processor. When the processor executes the computer program, the computer program is implemented. The method in Example 1.

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Abstract

The invention discloses a moving point target detection method and system based on high-time-phase detection, and the method comprises the steps: obtaining an image sequence shot by a high-frame-frequency camera, and dividing the image sequence into a plurality of basic processing units; in each basic processing unit, detecting a pixel with a target by using time domain transient fluctuation information caused when the target passes through the pixel to obtain a track of the target; and associating the target tracks of all the basic processing units through a track association method to obtaina target overall track. According to the method provided by the invention, a high-frame-frequency detection data and time sequence processing method is utilized, so that the detection accuracy of thelow-signal-to-noise-ratio moving point target can be improved, and the false alarm rate is reduced.

Description

technical field [0001] The invention relates to the field of target detection, in particular to a method and system for detecting a moving point target based on high-phase detection. Background technique [0002] Moving point target detection has important applications in the field of remote sensing. The existing moving point target detection methods mainly use infrared detection methods, and the detection premise is that the target has a high contrast with the background. For the detection of large-scale and high-speed moving point targets based on visible light detection, the target speed is fast, the signal-to-noise ratio is low, and sometimes it will be completely lost in the background noise. Therefore, the existing common frame rate detection methods are difficult to effectively detect the target. [0003] From the perspective of detection methods, the existing moving point target detection mainly focuses on the detection of information targets using spatial informatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/215G06T7/246
CPCG06T7/215G06T7/246
Inventor 牛文龙郑伟杨震
Owner NAT SPACE SCI CENT CAS
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