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Multispectral satellite remote sensing image fusion method

A technology of satellite remote sensing and image fusion, applied in the field of image fusion, to achieve high resolution, good color effect, and clear image effect

Inactive Publication Date: 2020-09-15
WUHAN UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of fusion processing of multi-spectral satellite remote sensing images, and realize image fusion of multi-spectral satellite remote sensing images using two-dimensional four-channel inseparable lifting wavelet

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[0015] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0016] please see figure 1 , a kind of multi-spectral satellite remote sensing image fusion method based on four-channel inseparable lifting wavelet provided by the invention comprises the following steps:

[0017] Step 1: Construct a two-dimensional four-channel non-separable wavelet filter;

[0018] Step 1.1: For the case of two-dimensional four-channel image processing, the specific form of constructing the filter bank is as follows, if the stretching matrix of wavelet transform is A=[2,0;0,2], then it has tight support and orthogonality The 2P×2P filter...

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Abstract

The invention discloses a multispectral satellite remote sensing image fusion method which comprises the following steps: firstly, constructing a two-dimensional four-channel inseparable wavelet filter, and constructing a two-dimensional four-channel inseparable wavelet filter lifting form; then, a constructed two-dimensional four-channel inseparable wavelet filter lifting form is used for carrying out layer-by-layer decomposition on the two images participating in fusion; fusing the sub-images obtained by decomposition; and finally, carrying out inverse transformation of the inseparable lifting wavelet on an obtained result, and reconstructing a fused image. According to the wavelet multispectral image fusion method based on two-dimensional four-channel inseparable lifting, from the viewof the visual effect of fusion, the method has a good visual effect, is clear in the fusion result image, and can keep a good color effect. From the perspective of objective performance indexes, the method not only can keep better spectral information, but also can keep higher resolution.

Description

technical field [0001] The invention belongs to the technical field of image fusion, and relates to a satellite remote sensing image fusion method, in particular to a multi-spectral satellite remote sensing image fusion method based on four-channel inseparable lifting wavelets. Background technique [0002] With the continuous development of satellite remote sensing technology, more and more different types of remote sensors are used for earth observation, and these different remote sensing data have their own advantages and limitations. Among them, in order to make full use of multi-spectral satellite remote sensing image data, multi-spectral image fusion technology came into being. In recent years, there have been more and more researches on image fusion, and the research on lifting wavelet with inseparable wavelet has become a new direction in the field of image fusion. In image processing, the application of lifting wavelet has an important impact on reducing the comple...

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Application Information

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IPC IPC(8): G06T5/50
CPCG06T5/50G06T2207/10036G06T2207/20221
Inventor 崔晓晖付忠旺刘斌沈志东杨亦平
Owner WUHAN UNIV
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