Infrared small target detection method based on adaptive peak gradient descent filter

A small target detection and gradient descent technology, which is applied in instruments, image analysis, image enhancement, etc., can solve problems such as the inability to effectively suppress irregular clutter and the performance of weak and small target detection, and achieve the goal of suppressing background clutter and noise, The effect of reducing false alarm rate and improving detection rate

Active Publication Date: 2021-11-12
WUHAN UNIV
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Problems solved by technology

Since the rectangular windows used in these methods may contain both irregular clutter and the background, they cannot effectively suppress irregular clutter
When the window cell contains both clutter and objects smaller than the cell size, the detection performance of weak and small objects degrades

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  • Infrared small target detection method based on adaptive peak gradient descent filter
  • Infrared small target detection method based on adaptive peak gradient descent filter
  • Infrared small target detection method based on adaptive peak gradient descent filter

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[0038] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] In order to more clearly illustrate the purpose, technical solutions and beneficial effects of the present invention, further description will be given below in conjunction with the accompanying drawings and embodiments. It should be understood that the present invention should not be limited to the content disclosed in the embodiments, and the protection scope of the present invention is subject to the scope defined in the claims.

[0040] Technical problem: Aiming at the problem that the existing method has a large amount of calculation and insufficient effect of suppressing irregular clutter, the present invention proposes an infrared small target detection method based on an adaptive peak gradient descent filter, which does not need to set a rectangular window according to the target size , using the gray difference...

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Abstract

The invention discloses an infrared small target detection method based on an adaptive peak gradient descent filter, and solves the problems that irregular clutters cannot be suppressed and weak target detection performance is low due to the fact that a rectangular window is used for extracting local features of an infrared image in an existing infrared weak target detection method. According to the method, the characteristic that the local pixel gray value gradient in an infrared image is reduced and the characteristic that the local contrast difference exists between an infrared weak and small target and a background are fully utilized. Irregular clutters can be inhibited; a rectangular window does not need to be set according to target size; the invention is beneficial for detecting targets with pixels smaller than 9 * 9, improves the performance of infrared weak and small target detection, and achieves the effect of early detection.

Description

technical field [0001] The invention belongs to the technical field of image target detection, and in particular relates to an infrared small target detection method based on an adaptive peak gradient descent filter. Background technique [0002] Infrared small target detection plays a key role in the infrared early warning system. The target appears as a point with a small amount of structural information and shape features in the infrared image, so that the target cannot be segmented and extracted with detailed features. In a real infrared image, due to the performance of the infrared focal plane and the environment in which the target is located, small targets are easily overwhelmed by noise and clutter. Therefore, how to detect weak infrared targets from infrared images full of noise and complex clutter without generating false alarms is still a challenging problem. [0003] In the past decade, researchers have proposed single-frame detection methods and multi-frame de...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/136G06T5/00
CPCG06T7/136G06T5/002G06T2207/10048
Inventor 黄珺马泳樊凡梅晓光
Owner WUHAN UNIV
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