Method for optical and synthetic aperture radar image registration

A synthetic aperture radar, image registration technology, applied in image enhancement, image analysis, image data processing and other directions, can solve the problem of poor applicability of optical image and SAR image registration, achieve registration rate improvement, low false alarm rate , the effect of high operational efficiency

Active Publication Date: 2017-10-24
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0005] In order to solve the problem of poor applicability of traditional methods for optical image and SAR image registration, the present invention pr

Method used

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  • Method for optical and synthetic aperture radar image registration
  • Method for optical and synthetic aperture radar image registration
  • Method for optical and synthetic aperture radar image registration

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Embodiment

[0067] The optical image and SAR image data used in the following are the Oberpfaffenhofen area in Germany, the Albuquerque area in the United States, and the Fort Jefferson area in the United States as examples.

[0068] attached figure 2 For the straight line feature map extracted by the LSD algorithm, the optical image and SAR image size of the Oberpfaffenhofen area in Germany are 800×800 and 1200×1300, respectively, and the optical image and SAR image size of the Albuquerque area in the United States are 399×459 and 500×457, respectively. The size of the optical image and the SAR image of the Fort Jefferson area in the United States are 570×440 and 531×399, respectively.

[0069] attached Figure 4 Describe the process schematic for the eigenvectors. Figure 4 (a) is a schematic diagram of the main direction of straight line intersection, Figure 4 (b) is a schematic diagram of feature point description vectors.

[0070] attached Figure 5 A schematic diagram of the ...

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Abstract

The present invention belongs to the technical field of image registration, and in particular relates to a method for optical and synthetic aperture radar image registration. In the invention, the registration is based on the use of line characteristics and the space constraint criterion; through the extraction of the corresponding line characteristics and the solution to the corresponding intersection points, the point characteristics can be obtained indirectly. The intersection points are subjected to characteristic vector description, and the initially matched point pairs are screened through the space constraint criterion to finally complete the image registration. Compared with the commonly used registration method, the image point pair registration rate is raised to some extent, which facilitates the subsequent image fusion.

Description

technical field [0001] The invention belongs to the technical field of image registration, and in particular relates to a method for optical and synthetic aperture radar image registration. Background technique [0002] Synthetic Aperture Radar (SAR) is capable of providing high-resolution images throughout the day and in all weather conditions. With the development of imaging technology, there are various ways to obtain images of a certain area, and there may be differences in imaging methods, shooting angles, and shooting times among these images. There is a certain complementarity between different imaging methods. For example, SAR images can clearly reflect the detailed information of the target, and optical images can give people an intuitive understanding. In order to give full play to the advantages of different imaging methods, images need to be fused, and registration is a necessary step for image fusion. [0003] The purpose of image registration is to find the t...

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Application Information

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IPC IPC(8): G06T7/33
CPCG06T7/33G06T2207/10044
Inventor 崔宗勇王文洋曹宗杰皮亦鸣徐政五
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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