Fusion method for generating high-spatial-resolution multispectral image

Abstract

The invention provides a fusion method for generating a high-spatial-resolution multispectral image, which is used for fusing an image with high spatial resolution and less spectral bands and an imagewith low spatial resolution and more spectral bands to generate an image with high spatial resolution and multispectral bands, and comprises the following steps of: generating an image with high spatial resolution and multispectral bands, and comprises the steps of: extracting a spectrum base from the image with low spatial resolution; comparing the existing wave band of the high-spatial-resolution image with the reconstructed wave band, and resolving to obtain a coefficient corresponding to the spectrum base; and reconstructing all spectrums of the high-spatial-resolution pixels through linear combination of the spectrum bases and the corresponding coefficients of the spectrum bases, so that an image with high spatial resolution and multispectral bands is generated. According to the fusion method for generating the high-spatial-resolution multispectral image, the advantages of the two images can be combined on the basis of spectral fitting, the spectral similarity between geographicdata is fully utilized, and an effective method is provided for producing the high-spatial-resolution multiband image.

Description

technical field [0001] The invention relates to a multi-source remote sensing data fusion method, which is used for generating high-spatial-resolution multi-spectral remote sensing images, and belongs to the space-spectrum fusion category of remote sensing data. Background technique [0002] With the development of satellite sensors, imagery with a spatial resolution of less than 5 meters has been widely used in the past few decades. The improved spatial resolution of such images provides richer spatial details of the land surface, facilitating many successful applications such as urban land cover / use classification, change detection, and object recognition, among others. Unfortunately, due to budgetary and technical constraints, such high-spatial-resolution images usually have limited spectral bands, mainly in the visible and near-infrared (VNIR) bands. The shortage of important spectral bands such as the red edge and short-wave infrared (SWIR) bands greatly limits the wid...

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Problems solved by technology

However, none of them considers the ability to generate high-precision fusion

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