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Characterization method of polarization image information and calculation method of characterization parameters

A polarization image and polarization imaging technology, applied in the field of imaging, to achieve the effect of accurate and intuitive polarization information, reducing influence and improving accuracy

Active Publication Date: 2020-08-04
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] Aiming at the problem of finding the maximum polarization intensity image and the minimum polarization intensity image in the existing polarization imaging, the present invention provides a characterization method of polarization image information and a calculation method of characterization parameters, the purpose of which is to obtain polarized sub-images Calculate the maximum intensity and minimum intensity polarized sub-images, improving the accuracy of polarization imaging

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  • Characterization method of polarization image information and calculation method of characterization parameters

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[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0035] The present invention provides a method for characterization of polarization image information. The polarizer is located between the detector and the polarization imaging target, and placed close to the detector to cover the full aperture of the detector. The polarization cosine characterization equation is as follows:

[0036] I(t,x,y)=I LP (x, y)cos 2 (t-theta(x,y))+I NLP (x,y)

[0...

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Abstract

The invention discloses a characterization method of polarization image information and a calculation method of characterization parameters, and belongs to the technical field of imaging. The method comprises the steps of acquiring n polarization sub-images of a polarization imaging target, wherein all the polarization sub-images correspond to different polarization angles, and n is greater than or equal to 3; and calculating a parameter matrix [ILP (x, y) INLP (x, y) theta (x, y)] of a polarization cosine characterization equation of all pixel points of the polarization imaging target according to all polarization sub-images and the polarization cosine characterization equation of the polarization imaging target. Aiming at a problem that a maximum polarization intensity image and a minimum polarization intensity image need to be found during traditional polarization imaging, the maximum polarization intensity image and the minimum polarization intensity image are obtained through calculation of multiple polarization intensity images, the accuracy of polarization imaging is improved, and the accuracy is much higher than that found by naked eyes. In order to solve the problem of experimental errors generated in the polarization imaging process, polarization cosine characterization parameters are calculated through least square method fitting, and the influence of the experimental errors on experimental results can be effectively reduced.

Description

technical field [0001] The invention belongs to the field of imaging technology, and more specifically relates to a method for characterizing polarization image information and a method for calculating characterizing parameters. Background technique [0002] Clear imaging of targets in scattering media is an important research direction of image processing technology, and it has good application prospects in the fields of underwater detection, military reconnaissance in complex environments, and intelligent driving in foggy weather. Imaging in a scattering medium, due to the absorption and scattering of the light beam by the scattering particles, a large amount of scattering noise is caused, and the signal light is greatly attenuated, the imaging quality is seriously reduced, and it is difficult to achieve the expected effect. [0003] At present, the methods to solve the imaging of scattering media mainly include correlation imaging technology, blind deconvolution algorithm...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/21G06F17/11G06F17/16
CPCG01N21/21G06F17/11G06F17/16G06T7/97
Inventor 马冬林延翊铭
Owner HUAZHONG UNIV OF SCI & TECH
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