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A method and apparatus for detecting infrared dim small targets under a complex background

A technology for weak and small targets and complex backgrounds, applied in image data processing, instruments, calculations, etc., can solve the problem of low detection accuracy of infrared weak and small targets, achieve suppression of complex background noise interference, reduce noise interference, and enhance target signal-to-noise ratio Effect

Inactive Publication Date: 2018-12-14
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for detecting small and weak infrared targets in complex backgrounds, so as to solve the problem of low detection accuracy of small and weak infrared targets under complex backgrounds

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  • A method and apparatus for detecting infrared dim small targets under a complex background
  • A method and apparatus for detecting infrared dim small targets under a complex background
  • A method and apparatus for detecting infrared dim small targets under a complex background

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Embodiment Construction

[0054] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0055] An embodiment of the method for detecting infrared weak and small targets under complex backgrounds of the present invention.

[0056] The flow process of the infrared weak and small target detection method under the complex background of the present invention is as follows figure 1 As shown, firstly, the bilateral filtering algorithm is used to preprocess the single-frame infrared images in the image sequence successively, so as to reduce the noise interference in the scene and enhance the target signal-to-noise ratio; The potential candidate target set in each preprocessed image is detected frame by frame; finally, the pipeline filtering algorithm is used to confirm the possible real target in the candidate target set by using the spatio-temporal continuity of the trajectory of small targets in multiple frames of images. The implem...

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Abstract

The invention relates to a method and apparatus for detecting infrared dim small targets under a complex background, belonging to the technical field of infrared target detection. At first, the invention adopts a bilateral filtering algorithm to preprocess the single-frame infrared images in an image sequence successively, so as to reduce noise interference in the image and enhance the signal-to-noise ratio at the target; then, a single-frame infrared target detection algorithm based on block extremum is used to detect the potential candidate target sets in each preprocessed image frame by frame; based on the spatio-temporal continuity of small targets in multi-frame images, a pipeline filtering algorithm is used to identify the possible real targets in the candidate target set; finally the false alarm removal strategy is used to eliminate the false target and finally confirm the true target. Through the process, the invention overcomes the shortcomings of weakening target intensity, blurring edge, enlarging contour and the like brought by the prior infrared image processing technology, and can better retain and enhance the dim small target information, improve the target detectionrate, and reduce the missed detection rate and false alarm rate of the target.

Description

technical field [0001] The invention relates to a method and device for detecting small and weak infrared targets under complex backgrounds, and belongs to the technical field of infrared target detection. Background technique [0002] Target detection and recognition using infrared imaging technology is a key technology in the military field. In order to enable infrared search and tracking systems or guidance systems to have sufficient reaction time and improve the early warning distance of defense, it is required to detect targets at a very long distance. Therefore, the target can be found as early as possible, and the target generally occupies a size of about 1×1 pixel to 30×30 pixels on the image. In addition, the infrared sensor is affected by atmospheric thermal radiation, long distance and noise, especially under the interference of non-stationary undulating background, the target contrast and signal-to-noise ratio are very low. When the target has the above two char...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/11G06T7/194G06T5/00
CPCG06T7/11G06T7/194G06T2207/20024G06T2207/20021G06T2207/10048G06T2207/10016G06T2207/30212G06T5/70
Inventor 李明锁孟会晓
Owner LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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