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Fusion method and device for full-color image and multi-spectral image

A multi-spectral image, panchromatic image technology, applied in the field of remote sensing image fusion obtained by satellite, can solve problems such as poor fusion quality, achieve clear texture, improve spectral distortion problems, and achieve high-quality effects

Active Publication Date: 2017-06-20
TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
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Problems solved by technology

[0006] In order to solve the problem of poor fusion quality existing in existing remote sensing image fusion methods, the present invention provides a fusion method and device for panchromatic images and multispectral images, which reasonably improves the traditional fusion method and improves the quality of remote sensing images. fusion quality

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  • Fusion method and device for full-color image and multi-spectral image
  • Fusion method and device for full-color image and multi-spectral image

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[0042] The method and device for fusing panchromatic images and multispectral images of the present invention will be explained and described in detail below in conjunction with the accompanying drawings.

[0043] Such as figure 1 , 2 , 3, the invention discloses a fusion method of a panchromatic image and a multispectral image, and the fusion method comprises the following steps:

[0044] Step 1, process the multispectral image, so that the processed multispectral image and panchromatic image have the same pixel size, in order to achieve a better fusion effect in the later stage; in this embodiment, the method is processed by cubic convolution interpolation Multispectral imagery.

[0045] Step 2, transform the processed multispectral image to form 1 luminance component and n-1 angle components, where n is the total number of components; in this embodiment, the hyperspherical color space is performed on the processed multispectral image transform.

[0046] Step 3, perform ...

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Abstract

The invention discloses a fusion method and device for a full-color image and a multi-spectral image. The method comprises: a multi-spectral image and a full-color image have same pixel elements and the processed multi-spectral image is transformed to form one luminance component and n-1 angle components; gray stretching processing is carried out on the full-color image; the luminance component and the full-color image after gray stretching are fused to obtain a new component; and inverse transformation is carried out on the new component and the n-1 angle components to form a fused image. In addition, the device is composed of a processing module, a transformation module, a stretching module, a fusion module and an inverse transform module. According to the fusion method and device, the multi-spectral image has a high spatial resolution and spectral information of the original multi-spectral image is kept well, so that a spectral distortion problem in the traditional fusion method can be solved. Moreover, the fused image obtained by the fusion method has advantages of high overall contrast ratio, clear texture, and enriched edge information.

Description

technical field [0001] The present invention relates to the technical field of fusion of remote sensing images acquired by satellites, more specifically, [0002] The invention relates to a fusion method and device of a panchromatic image and a multispectral image. Background technique [0003] Due to technical limitations, satellites can only provide two types of images at present, one is high-resolution panchromatic images (black and white), and the other is low-resolution multispectral images (color). At present, scientific research and applications in various fields have a great demand for high-quality fusion data products. In order to obtain higher-resolution color images, panchromatic images and multispectral images need to be fused. [0004] However, traditional fusion methods suffer from poor fusion quality. For example, some fusion methods will lead to spectral distortion of remote sensing images, which will affect the interpretation and analysis of remote sensing...

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Application Information

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IPC IPC(8): G06T5/50
CPCG06T5/50
Inventor 张万峰李盛阳杨松
Owner TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
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