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Long-wave infrared polarization feature extraction and fusion image enhancement method

A fusion method and feature extraction technology, applied in image enhancement, image analysis, image data processing, etc.

Active Publication Date: 2018-09-04
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0004] In order to solve the above-mentioned technical problems of infrared polarization feature extraction and the use of polarization features to enhance the artificial target in the complex background of the infrared image of the target scene

Method used

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  • Long-wave infrared polarization feature extraction and fusion image enhancement method
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  • Long-wave infrared polarization feature extraction and fusion image enhancement method

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Embodiment Construction

[0054] The present invention will be further described below in conjunction with drawings and embodiments.

[0055] Such as figure 1 Shown is the general flow chart of the present invention; The inventive method is by testing the outdoor car target scene and the civilian house target scene in the woods, and the experimental results show that the polarization difference between the artificial target and the natural background can be fully utilized, and the polarization characteristics The image and the infrared intensity image are fused, and the specific steps are as follows:

[0056] (S1) Acquisition and preprocessing of infrared polarization image information

[0057] Use the long-wave infrared polarization imaging detection system to collect no less than three channels of the target scene (different analysis directions, such as I 0° , I 60° , I 120° ) of the infrared polarization image, the Stokes polarization state can be calculated. Image preprocessing includes image ...

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Abstract

The invention belongs to the field of infrared image processing, and relates to an image enhancement method based on long-wave infrared polarization feature extraction and fusion method. The method comprises the steps of (S1) collecting an infrared polarization image, and preprocessing the collected infrared polarization image; (S2) performing Stokes polarization state calculation on the preprocessed image in the step (S1), and calculating a polarization degree and a polarization angle according to a Stokes polarization state calculation result; (S3) carrying out completely polarized light decomposition calculation by using the polarization degree and the polarization angle; (S4) defining a polarization orthogonal difference value, setting a weighting coefficient, and extracting a polarization feature image, wherein the polarization feature image comprises a polarization parallel component image and a polarization vertical component image; and (S5) fusing the polarization feature imageand an infrared intensity image by using a non-downsampling shear wave algorithm. The method can effectively extract the polarization information of a target scene, has a good polarization feature extraction effect, performs fusion on the extracted polarization feature image and the infrared intensity image and significantly enhances the information content of the target scene.

Description

technical field [0001] The invention belongs to the field of infrared image processing, relates to the processing and analysis of infrared polarization image information, and realizes a long-wave infrared polarization feature extraction and fusion method. Background technique [0002] Infrared imaging technology has the characteristics of passive work, strong anti-interference ability, strong target recognition ability, and all-weather work. It is widely used in military reconnaissance, surveillance, and guidance. At present, most infrared detection technologies realize the discovery, identification and tracking of targets by detecting the infrared radiation intensity of the target and the background. However, when the target background is very complex, there is external interference, and the temperature difference between the target and the background is small, the traditional detection method based on infrared intensity will be greatly limited. Infrared polarization imagi...

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Application Information

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IPC IPC(8): G06T5/00G06T7/30G06T7/12
CPCG06T5/00G06T7/12G06T7/30G06T2207/20221
Inventor 张焱张景华石志广杨卫平胡谋法张路平
Owner NAT UNIV OF DEFENSE TECH
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