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Polarization image registration method

A polarized image and registration technology, applied in image enhancement, image analysis, image data processing, etc.

Active Publication Date: 2018-11-06
ANHUI UNIVERSITY
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Problems solved by technology

[0005] The purpose of the present invention is to solve the defect that there is no registration method for polarized images in the prior art, and to provide a registration method for polarized images to solve the above problems

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Embodiment Construction

[0056] In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

[0057] Such as figure 1 As shown, a polarization image registration method described in the present invention includes the following steps:

[0058] The first step is to obtain the polarization image, obtain the polarization reference image I 1 and polarized images to be registered I 2 .

[0059] The second step is the feature extraction of polarized images. Using the Hessian-Affine affine invariant detection operator on the polarization reference image I 1 and polarized images to be registered I 2 Extract feature points and obtain two corresponding affine-invariant elliptical regions; establish a mapping relationship between elliptical regions and fixed-size circles, and normalize elliptical regions into circular regions.

[00...

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Abstract

The invention relates to a polarization image registration method. Compared with the prior art, the method has the advantage that the defect of having no registration method for a polarization image is solved. The method comprises the following steps of obtaining polarization images; extracting features of the polarization images; matching primary selection features; obtaining a transformation parameter model; adjusting translation parameters of the transformation model; and obtaining a registration result. According to the method, the image features of the polarization images are taken into full consideration, the registration between the polarization images is realized, and the registration precision of the polarization images in various environments can reach a subpixel demand.

Description

technical field [0001] The invention relates to the technical field of image registration, in particular to a polarization image registration method. Background technique [0002] Infrared polarization imaging technology uses the differences in infrared radiation polarization characteristics between man-made targets and natural targets, real targets and camouflaged targets to improve the target recognition effect. The structure rises to the spatial structure, which provides a variety of options for the description of the target in the infrared scene, and is more conducive to the detection of target details. Infrared polarization imaging is mainly realized by multi-camera or single-camera imaging systems. The polarization images captured by the camera polarization imaging system in the same scene are affected by the distance between multiple lenses and the angle between the main optical axis, resulting in a certain translation and rotation between the images. When collectin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/33
CPCG06T2207/10048G06T7/33
Inventor 朱明姚强唐俊王年张艳王煜廖小双
Owner ANHUI UNIVERSITY
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