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An extremely weak small infrared target detection method

A technology of infrared target and detection method, which is applied in image data processing, instruments, computing and other directions, and can solve problems such as static and slow target movement.

Pending Publication Date: 2019-05-10
TIANJIN JINHANG INST OF TECH PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the size range of infrared extremely weak small targets even ranges from 3*3 to 10*10 at long distances, and the target moves slowly or even stands still, which brings greater challenges and difficulties to the detection of infrared small targets

Method used

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  • An extremely weak small infrared target detection method
  • An extremely weak small infrared target detection method
  • An extremely weak small infrared target detection method

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Embodiment 1

[0038] This embodiment further describes the above method:

[0039] 1. Detect the maximum point in the image whose gray value is greater than a certain threshold as the center point of the candidate infrared weak and small target points.

[0040] A major feature of the infrared target is that the gray value of a certain pixel area is greater than the gray value of the surrounding pixels, and it appears as a bright spot. Using this feature, large areas of background pixels can be excluded, thereby speeding up the detection process. It can be used in a 3×3 neighborhood around each pixel, such as figure 1 shown. It is judged whether the gray value of the center point pixel C is the maximum value of the gray value of all the pixels in the 8 neighborhoods. If it is a maximum value and its gray value is greater than a certain threshold, it is regarded as the center point of the candidate infrared target.

[0041] 2. Use the grayscale histogram to analyze the grayscale distributi...

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Abstract

The invention belongs to the technical field of infrared target detection, and particularly relates to an extremely weak infrared target detection method, which comprises the following steps of: detecting a maximum value point of which the gray value is greater than a certain threshold value in an image as a central point of a candidate infrared weak target point; analyzing gray scale distributionof the candidate infrared weak small target points, and determining a gray scale segmentation threshold value; performing feature information statistics in the local area of the candidate infrared weak small target point according to the gray segmentation threshold; Establishing a recognition model according to the feature information of the true and false infrared weak small target points; and inputting the feature information of the candidate infrared weak small target points to the recognition model for judgment to obtain the detection information of the candidate infrared weak small target in the image. When the method provided by the invention is used for detecting the infrared weak small target, the feature information of the weak small target can be quickly obtained, and particularly, the method also has a certain detection capability on the extremely weak small target.

Description

technical field [0001] The invention belongs to the technical field of infrared target detection, in particular to a method for detecting extremely weak and small infrared targets. Background technique [0002] Infrared weak and small target detection and tracking is the key technology of infrared early warning system, and an important foundation for establishing an efficient and complete integrated early warning system. The function of the infrared weak and small target detection and tracking algorithm is to effectively extract the weak and small targets in the scene under the complex background, and to continuously track the detected weak and small targets, so as to provide the basis for decision-making for the subsequent system. [0003] Accurate infrared target detection algorithm is the basis of long-range early warning system. In order to advance the warning time of the early warning system and find the location of the intrusion target as early as possible, the early ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/70G06T7/136G06T7/12
Inventor 张羽张昊
Owner TIANJIN JINHANG INST OF TECH PHYSICS
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