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Intelligent infrared small target detection method

A small target detection and small target technology, applied in image data processing, instruments, computing and other directions, can solve problems such as moving target recognition interference, and achieve the effect of solving the problem of infrared weak and small target detection, with obvious background suppression effect and high degree of discrimination.

Inactive Publication Date: 2015-09-09
HENAN SUNLINK NETWORK TECH
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Problems solved by technology

In addition, the complex background of the battlefield will also greatly interfere with the identification of moving targets

Method used

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  • Intelligent infrared small target detection method
  • Intelligent infrared small target detection method

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Embodiment Construction

[0017] The basic idea of ​​the present invention: the infrared weak and small target image is composed of the target, the background and the electronic noise of the imaging device. Even if the intensity of the target in the image is not the strongest in the entire frame image, the difference between the target and the local background in its neighborhood is obvious, and the radiation intensity is generally higher than that of the local background. The target area in the infrared image is usually a bright area. In the case of selecting a structural element larger than the target area, the gray-scale morphology opening operation can make the bright target area be regarded as noise and be filtered out, and the possible target can be estimated The image background outside the area. The original image is subtracted from the estimated image background to obtain an enhanced image that contains candidate targets and suppresses a large amount of background. After background suppressio...

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Abstract

The invention discloses an intelligent infrared small target detection method. The method comprises: firstly, dividing an infrared image into sub images on the basis of statistical characteristics, and determining a candidate target area; then, determining the size of a structural element based on the size of the candidate target region, and computing to realize the estimation on an infrared complicate background by using a grayscale morphology; making a difference image between an infrared original and a background estimation image, so as to realize the complicate infrared background suppression and giving prominence to a to-be-detected small target; taking six variables subjected to background suppression as infrared small target characteristics; taking the infrared small target characteristics as input, and taking a pixel category as output to form a three-layer BP (back propagation) neural network; forming a nonlinear input-output relation between an image pixel characteristic and a target or a background after the training on a large sample, and building a BP neural network detection model. After an actual infrared image is subjected to the background suppression, a pixel characteristic vector is extracted and then is fed into the trained BP neutral network, so as to realize the small target online intelligent detection under an infrared complicate background.

Description

technical field [0001] The invention relates to a small target detection method, which is suitable for the detection of weak and small targets under the complex background of long-distance infrared. Background technique [0002] In the field of military applications based on infrared detection, when the distance between the detection system and the target is relatively long, on the one hand, the intensity of infrared radiation received by the infrared detector is very weak, and on the other hand, the noise and background clutter interference in the detector It is often stronger, so it is a weak target detection problem with a low signal-to-noise ratio. In addition, the complex background of the battlefield will also greatly interfere with the identification of moving targets. In addition to the application in the military field, it is effective in the fields of satellite atmospheric infrared cloud image analysis, space remote sensing, infrared medical image pathological ana...

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Application Information

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IPC IPC(8): G06T7/00
Inventor 刘刚李冠峰李云龙张丹郑林涛刘森赵旭辉
Owner HENAN SUNLINK NETWORK TECH
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