Infrared small target detection method based on image curvature and gradient

Abstract

The invention discloses an infrared small target detection method based on image curvature and gradient, which belongs to the field of infrared detection and comprises the following steps of: firstly, performing curvature filtering on an input infrared image to obtain a minimum curvature characteristic pattern and an average curvature characteristic pattern; secondly, setting a threshold value according to the minimum curvature feature map, and carrying out global threshold value segmentation to obtain a binary image; thirdly, performing gradient filtering on the input infrared image by combining the binarized image to obtain a minimum gradient feature map and an average gradient feature map; then, according to the minimum curvature feature map and the minimum gradient feature map, carrying out fusion to obtain a small target feature map; and finally, performing centroid point screening on the binarized image in combination with the small target feature map and the infrared image grey-scale map, and outputting all suspected target centroid points as a detection result.

Description

technical field [0001] The invention belongs to the field of infrared detection, in particular to an infrared small target detection method based on image curvature and gradient. Background technique [0002] With the rapid development of military technology, the disadvantages of radar early warning technology, such as poor mobility, limited geographical configuration, vulnerability to electronic interference and reflection missiles, and poor detection performance of low-altitude targets, have become more and more obvious. The emergence of infrared detection technology It makes up for these problems very well. Infrared detection technology relies on receiving the infrared radiation characteristics of the target itself for passive detection. It combines photoelectric sensing technology, image processing technology, and control technology to implement detection of ground targets, air targets, and even in harsh electromagnetic environments. For day and night detection of space...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a small infrared target detection method based on image curvature and gradient. In view of the existing infrared small target detection technology, there are still great deficiencies in the extraction of small target features and the distinction from background clutter. As a result, the infrared small target detection technology has a high false alarm rate and missing alarm rate in practical applications, and it is difficult to adapt to the needs of small infrared target detection in complex environments. The detection method has low computational complexity and its method is simple to implement. High engineering application value

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