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Improved method for fusing remote-sensing multispectrum with full-color image

A panchromatic image and fusion method technology, applied in image enhancement, image analysis, image data processing, etc., can solve the problems of dark-tone pixel fusion spectral distortion, etc., to achieve the effect of enhancing spatial details, simple algorithm, and reducing spectral distortion

Inactive Publication Date: 2017-01-11
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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Problems solved by technology

In addition, in the case of considering the influence of fog, the distortion of the fusion spectrum of dark pixels in the image (especially pixels such as water bodies and shadows) is a key problem to be solved

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  • Improved method for fusing remote-sensing multispectrum with full-color image

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0034] like figure 1 As shown, an improved remote sensing multispectral and panchromatic image fusion method according to an embodiment of the present invention includes the following steps:

[0035] S1 uses the cubic convolution method to upsample the original MS image to the resolution of the original PAN image to obtain an upsampled MS image; uses the average method to downsample the original PAN image to the spatial resolution of the MS image, and then uses the cubic convolution method to...

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Abstract

The invention discloses an improved method for fusing improved remote-sensing multispectrum with a full-color image. The improved method comprises steps of adopting a cubic convolution mode to up-sample an original MS image to a resolution ratio of an original PAN image to obtain an up-sampling image MS, using an average method on an original PAN image to perform down-sampling to obtain a resolution ratio of an MS image spatial, adopting the cubic convolution method to up-sample to the original PAN spatial resolution rate to obtain an synthetic PAN image, 2) using the original PAN image to calculate a fog value of a PAN waveband, using the original MS image to calculate the fog value of each MS waveband, removing fog in the up-sampling MS image, the original PAN image and the synthetic PAN image according to the fog value of the PAN waveband and the fog value of each MS waveband to obtain an image Ir, an image Pr and an image Psr, 3) performing deviation on pixels close to 0 in the image Psr, obtaining a proportion image according to the image Pr and the image Psr and using the image Ir, the proportion image and the fog value of each MS waveband to obtain a fusion image.

Description

technical field [0001] The invention belongs to the technical field of remote sensing image processing, and in particular relates to an improved remote sensing multispectral and panchromatic image fusion method. Background technique [0002] Due to the limitations of the sensor's physical characteristics and data transmission capabilities, it is difficult to simultaneously acquire high spatial resolution and high spectral spatial resolution images. Therefore, a large number of satellites currently in orbit (such as Landsat 7 ETM+, QuickBird, SPOT-5 and WorldView-2 / 3, etc.), simultaneously provide high spatial resolution panchromatic band (PAN) and low spatial resolution multispectral band (MS) remote sensing images. Since a large number of applications require the use of high-spatial-resolution multispectral images, it is urgently necessary to fuse MS and PAN images to obtain MS images with enhanced spatial resolution for remote sensing image interpretation and land cover c...

Claims

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Application Information

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IPC IPC(8): G06T5/50G06T5/00
CPCG06T5/50G06T2207/10036G06T2207/20221G06T5/73
Inventor 李慧荆林海
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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