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Method for fusing full-color and multi-spectral images on basis of fitting for substituted components

A multi-spectral image, panchromatic image technology, applied in image enhancement, image data processing, instruments, etc., can solve the problems of overall structural information difference, fusion image spectral distortion, etc., achieve less parameters, avoid spectral and detail distortion, general good effect

Active Publication Date: 2013-08-07
BEIHANG UNIV
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Problems solved by technology

However, in some image regions, there is still a large difference in the overall structural information of the two, resulting in serious distortion of the spectrum of the fused image.

Method used

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  • Method for fusing full-color and multi-spectral images on basis of fitting for substituted components
  • Method for fusing full-color and multi-spectral images on basis of fitting for substituted components
  • Method for fusing full-color and multi-spectral images on basis of fitting for substituted components

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Embodiment Construction

[0029] The present invention mainly uses a data fitting method to fit the components to be replaced generated by matrix transformation and the panchromatic image, so that the overall structural information of the two is consistent, thereby realizing the high-fidelity fusion of panchromatic and multispectral images. figure 1 A flowchart showing the method for fusion of panchromatic and multispectral images based on fitting of replacement components. The basic idea of ​​the present invention is as follows: firstly, linearly stretch the brightness of the panchromatic image, interpolate the multispectral image to the same resolution as the panchromatic image, and perform matrix transformation on it to obtain the components to be replaced and the retained components; then, Subtract the components to be replaced from the panchromatic image to obtain the difference image, and perform Gaussian smoothing on the difference image to obtain the difference trend image; then, subtract the di...

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Abstract

The invention discloses a method for fusing full-color and multi-spectral images on the basis of fitting for substituted components. The method includes stretching the brightness of a full-color image at first, and interpolating a multi-spectral image to form an interpolated image with the resolution identical to that of the full-color image; transforming a matrix of the multi-spectral interpolated image to obtain a to-be-substituted component and a retaining component, and subtracting the to-be-substituted component from the full-color image to obtain a difference image; performing Gaussian filter for the difference image to obtain a difference trend image, and subtracting the difference trend image from the full-color image to obtain a fit full-color image; and substituting the fit full-color image for the to-be-substituted component, and inversely transforming a matrix to obtain a fused image. Compared with the prior art, the method has the advantages that the problem of spectral distortion caused by an existing method for fusing images by means of substituting components is solved, and the method is high in adaptability.

Description

technical field [0001] The invention relates to a remote sensing image fusion method, in particular to a panchromatic and multispectral image fusion method based on replacement component fitting, and belongs to the technical field of digital image processing. Background technique [0002] With the continuous development of remote sensing imaging technology, more and more multi-sensor satellites have been launched by various technological powers in the world, such as IKONOS, QuickBird, ALOS, WordView-2 and other satellites equipped with panchromatic and multi-spectral sensors. In order to meet the needs of remote sensing applications in my country, the Ziyuan No. 3 optical satellite was launched in 2012, which realized the multi-angle and multi-spectral comprehensive stereoscopic imaging of Chinese civilian satellites for the first time, and obtained a large number of panchromatic and multi-spectral remote sensing images. With the advancement of my country's high-resolution e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50
Inventor 徐其志李波杨光高峰
Owner BEIHANG UNIV
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