Fusion method and device for panchromatic image and multispectral image

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...

AI Technical Summary

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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