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Remote sensing image registration method

A remote sensing image and registration technology, which is applied in the field of image processing, can solve the problems of sensitivity to scene changes, unrobust algorithms, and large amount of calculations

Inactive Publication Date: 2011-01-26
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

As described in the document "Infrared Image Registration and High-Resolution Reconstruction Using Multiple Translationally shifted Aliased Video Frames", the traditional image registration algorithm is complex and requires a large amount of calculation; another example is the document "Image Registration and Its Application in Target Accurate Positioning" As mentioned above, both types of algorithms are sensitive to scene changes, which makes the algorithm not robust

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Embodiment Construction

[0059] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0060] The present invention is a remote sensing image registration algorithm, and its specific operation flow is as follows: figure 1 Shown:

[0061] First, run the image preprocessing program, read in the original image data, and perform image preprocessing (including grayscale correction and non-uniformity correction), and the processing results are as follows: figure 2 shown in the two figures. There is a slow change in the cloud target scene in the two images.

[0062] Then run the image registration process program to register the preprocessed images. Since generally there are more than two images to be registered (including two images), two images are taken as an example in the embodiment of the present invention.

[0063] The next step is to perform image binarization. Binarization is obtained by image segmentation based on a global thr...

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Abstract

The invention relates to the technical field of image processing, in particular to a remote sensing image registration algorithm. The registration algorithm comprises the following steps of: (1) reading primary remote sensing image data from a storage medium; (2) pre-processing each primary image; (3) performing binarization processing to realize image segmentation; (4) corroding and expanding the binary image; (5) extracting a monotropic edge from the eroded and expanded binary image by the Roberts cross gradient operator; (6) calculating the matching degree of the edge image and finding the optimal matching point; (7) conversing images; and (8) outputting registration information and registration images. The remote sensing image registration algorithm can be applied to multispectral data fusion and remote sensing image mosaicking.

Description

technical field [0001] The invention relates to image processing technology, in particular to a remote sensing image registration method, which is applied to multispectral data fusion and remote sensing image splicing. Background technique [0002] Image registration technology is an image analysis technology developed according to application requirements, and it is widely used in medical imaging, remote sensing images and other fields. Image registration algorithms can be summarized into two categories, namely, region-based registration and feature-based registration. As described in the document "Infrared Image Registration and High-Resolution Reconstruction Using Multiple Translationally shifted Aliased Video Frames", the traditional image registration algorithm is complex and requires a large amount of calculation; another example is the document "Image Registration and Its Application in Target Accurate Positioning" As mentioned above, both types of algorithms are sen...

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Application Information

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IPC IPC(8): G06T7/00G06T5/00
Inventor 周倩婷危峻徐志鹏田犁董小静
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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