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Ship target long wave infrared image enhancement method under water surface background

A long-wave infrared and image enhancement technology, which is applied in image enhancement, image analysis, image data processing, etc., can solve the problem of complex ship target enhancement, etc., and achieve the effect of solving solar flare interference, information entropy enhancement, and good visual effects

Inactive Publication Date: 2018-08-28
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0004] The problem to be solved by the present invention is the enhancement of ship targets under complex water surface background conditions. By processing the infrared intensity image and infrared polarization image information, a new target enhancement method of polarization normalized product fusion is proposed.

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  • Ship target long wave infrared image enhancement method under water surface background
  • Ship target long wave infrared image enhancement method under water surface background
  • Ship target long wave infrared image enhancement method under water surface background

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with drawings and embodiments. Such as figure 1 As shown, the present invention realizes a method for enhancing the long-wave infrared image of the ship target under the water surface background. Specific steps are as follows:

[0039] (S1) Acquisition and preprocessing of infrared polarization image information

[0040] 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 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 image noise and remove dead pixels. Registration is used to elimin...

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Abstract

The invention belongs to the infrared image processing field and relates to a ship target long wave infrared image enhancement method under the water surface background. The method comprises steps that (S1), an infrared polarization image of the target scene is acquired and preprocessed; (S2), Stokes polarization state solution of the preprocessed image in the (S1) is carried out; (S3), a polarization degree image and a polarization angle image of the target scene are calculated according to the Stokes polarization state solution result; (S4), normalization processing of the polarization degree image and an infrared intensity image is carried out; (S5), inversion operation of the normalized polarization degree image is carried out; and (S6), product operation among pixels is carried out for the polarization degree image after inversion operation of the (S5) and the infrared intensity image after normalization processing of the (S4) is carried out to acquire a fused image. The method isadvantaged in that a problem of solar flare interference during ship target detection under the complex water surface background, a weak target enhancement problem and an infrared radiation energy attenuation problem during long-range detection are solved.

Description

technical field [0001] The invention belongs to the field of infrared image processing, relates to the processing and analysis of infrared polarized image information, and realizes a long-wave infrared image enhancement method of a ship target under a water surface background. Background technique [0002] Infrared detection technology is a traditional target detection and recognition technology, which is widely used in military, aerospace, environmental detection and other fields. However, the infrared detection technology based on radiation intensity shows great limitations when detecting ship targets in a complex water surface background. As a new type of target detection technology, infrared polarization detection technology can provide more information related to the target, such as the material type of the object, surface roughness, and the temperature difference between the target and the surrounding environment. Different objects have different polarization characte...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50
CPCG06T5/50G06T2207/10048G06T2207/20221
Inventor 张焱张景华石志广杨卫平胡谋法赵菲
Owner NAT UNIV OF DEFENSE TECH
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