An 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, high discrimination, and obvious background suppression effect.

Inactive Publication Date: 2018-03-30
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

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  • An Intelligent Infrared Small Target Detection Method
  • An Intelligent Infrared Small Target Detection Method
  • An 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

An intelligent infrared small target detection method first divides the infrared image into sub-images based on statistical features to determine candidate target areas. Then, based on the size of the candidate target area, the size of the structural element is determined, and the gray-scale morphology is used to realize the estimation of the infrared complex background. The infrared original image is subtracted from the background estimated image to suppress the complex infrared background and highlight the small target to be detected. The six quantities that have undergone background suppression are used as infrared small target features. Taking infrared small target features as input and pixel category as output, a three-layer BP neural network is constructed. After large-scale training, the nonlinear input-output relationship between image pixel features and target or background is formed, and a BP neural network detection model is established. After the actual infrared image is suppressed by the background, the pixel feature vector is extracted and sent to the trained BP neural network to realize the online intelligent detection of small targets under the complex infrared 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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Patent Type & AuthorityPatents(China)
IPC IPC(8): G06T7/00
Inventor刘刚李冠峰李云龙张丹郑林涛刘森赵旭辉
OwnerHENAN SUNLINK NETWORK TECH