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Infrared complicated background inhibiting method based on combined filtering

A complex background and joint filtering technology, applied in the field of infrared complex background suppression, can solve the problems of weak and small moving target detection interference

Active Publication Date: 2014-09-10
枣庄市凯博港务有限公司
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Problems solved by technology

These complex backgrounds will greatly interfere with the detection of weak and small moving targets

Method used

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  • Infrared complicated background inhibiting method based on combined filtering
  • Infrared complicated background inhibiting method based on combined filtering
  • Infrared complicated background inhibiting method based on combined filtering

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Embodiment Construction

[0019] Basic ideas of the present invention: The invention proposes an infrared complex background inhibitory method combined with the combined filtering of the airspace and non -lower sample contour wave fields.This method can inhibit most infrared backgrounds in the gray morphology of the airspace through the gray morphology of adaptive structural elements.On this basis, the processing space is transformed to non -lower sampling contour wave domain. By analyzing the differences between the residual background, goals and noise coefficients in high -frequency sub -bands, based on the neighborhood re -calculating sub -band coefficient, the contour wave field of non -subsequent sampling contour wave fieldsHigh -frequency images are comprehensively forming a distance image, further increasing the images of the signal -to -noise ratio of the image and the final result of background suppression.Among them, the filter of the airspace is based on the gray morphology of adaptive structura...

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Abstract

The invention provides an infrared complicated background inhibiting method based on combined filtering. The method comprises the following steps of: S1, determination of the dimensions of morphological structural elements; S2, spatial background inhabitation: spatial primary inhabitation of an infrared complicated background is realized by utilizing the gray-scale morphological top-hat transform on the basis of the self-adapting structural elements; S3, non-subsampled contourlet transform: the non-subsampled contourlet first-level factoring is carried out on infrared images subjected to background primary inhibition by a space domain method, wherein a bandpass subband is factored into four high-frequency directions; S4, high-frequency coefficient reconstruction: the low-frequency influence is eliminated, and each high-frequency direction coefficient is calculated again on the basis of neighborhood average values; S5, high-frequency coefficient central vector construction: the average value of each high-frequency coefficient in each spatial position and in the four directions is calculated, and the high-frequency coefficient central vector is formed; and S6, non-subsampled contourlet domain background inhibition. The infrared complicated background inhibiting method solves the problem of infrared complicated background inhibition in typical environments, and lays a good foundation for the subsequent target detection.

Description

Technical field [0001] The present invention involves a complicated complex background suppression technology. It is specifically suitable for typical environments such as empty, open spaces, and sea surfaces in long -distance infrared and weak target detection.Methods. Background technique [0002] For the actual application system, how to give full play to the advantages of infrared target detection technology, and strive for information on the most powerful time to obtain the coming target has become an important factor in determining the victory and defeat of modern war.As a result, the detection distance of the goal as much as possible has become a problem that researchers in various countries are very concerned.The farther the distance, the smaller the imaging area of the target on the detection device, and the possibility of the target that will be affected by mixed waves and backgrounds will increase, so the difficulty of detection will also increase.The battlefield envir...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
Inventor 刘刚王俊岭张丹杨春蕾张倩茜赵旭辉
Owner 枣庄市凯博港务有限公司
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