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Infrared polarization image edge detection method

A polarization image, infrared polarization technology, applied in image analysis, image data processing, instruments, etc., can solve problems such as edge detection of complex artificial objects, and achieve the effect of good suppression performance, wide applicability, and simple algorithm process

Inactive Publication Date: 2014-10-15
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0011] The problem to be solved by the present invention is the edge detection of artificial targets under complex background conditions. By processing the multi-channel infrared polarization image information, a new infrared polarization image edge detection method is proposed.

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  • Infrared polarization image edge detection method

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Embodiment Construction

[0043] The present invention will be described below in conjunction with the accompanying drawings for specific embodiments.

[0044]The problem to be solved by the invention is the edge detection of the artificial target under complex background conditions. By processing the multi-channel infrared polarization image information, a method for edge detection of the infrared polarization image is proposed.

[0045] Step 1: Acquisition and preprocessing of infrared polarization image information

[0046] The Stokes polarization state can be calculated by using the infrared polarization imaging detector to collect infrared polarization images of no less than three channels (different polarization analysis directions) of the target scene. Image preprocessing includes image correction, filtering, registration, cropping, etc. Correction is used to offset the non-uniformity of the detector response and compensate for the non-ideality of optical components. Filtering is used to reduce...

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Abstract

The invention belongs to the field of infrared image processing, and provides an infrared polarization image edge detection method. The infrared polarization image edge detection method comprises the following steps: 1) colleting and pre-processing infrared polarization image information; 2) carrying out image shift processing, and separately carrying out a shift operation to the pre-processed polarization images of three channels; 3) carrying out Stokes polarization state resolution; 4) finishing polarization component decomposition; 5) carrying out superposition fusion and threshold value segmentation; and 6) carrying out morphological processing, smoothening a target outline through open operation, weakening a narrow part, removing a thin extruded part, and extracting the edge of a single pixel by morphological refined operation. Infrared polarization characteristic differences are utilized to enhance target edge outline information with transition nature and decompose intensity information ineffective to target identification, and edge information can be effectively highlighted to realize edge detection.

Description

technical field [0001] The invention belongs to the field of infrared image processing, and in particular relates to an edge detection method for infrared polarized image information. Background technique [0002] Infrared imaging technology has been widely used in military reconnaissance, surveillance and guidance due to its advantages of passive work, strong target recognition ability, and all-weather work. However, due to the influence of atmospheric attenuation and complex background, the quality of infrared imaging is not ideal; with the development of photoelectric countermeasures technology, especially the use of some new infrared camouflage and stealth measures, the infrared emissivity of the target is greatly reduced, and the target's infrared Radiation characteristics are distorted, resulting in small target-background contrast in infrared imaging, and the outline structure features of the target are not prominent, which poses a serious challenge to the detection a...

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Application Information

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IPC IPC(8): G06T7/00
Inventor 张焱鲁新平陈小天韩建涛邱跳文
Owner NAT UNIV OF DEFENSE TECH
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