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A Visual Enhancement Method for Remote Sensing Images

A technology of remote sensing images and images, which is applied in the field of visualization enhancement of remote sensing images, and can solve problems such as poor visualization of remote sensing images

Active Publication Date: 2020-09-08
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to propose a visualization enhancement method for remote sensing images to solve the problem of poor visualization of existing remote sensing images

Method used

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  • A Visual Enhancement Method for Remote Sensing Images

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Experimental program
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Embodiment

[0049] The experimental data are selected from low-resolution eight-band images and high-resolution images provided by WorldView-2 satellite. The spatial resolution of the low-resolution eight-band image is 2 meters, and the spatial resolution of the high-resolution image is 0.5 meters. The image size is 1600 pixels × 1600 pixels, and the number of quantization bits is 13 bits. The image scene is part of the city of Rome, Italy, including cars, buildings, roads, trees, sports fields, etc. As can be seen from the RGB composite image of the low-resolution eight-band image, overall clarity is poor and colors appear unnatural, especially in shadowed areas around buildings and trees and light-colored roofs with highly reflective features part.

[0050]The Gaussian low-pass filter is selected as the low-pass filter used in the second step, the window radius of the filter is selected as 2, and the standard deviation is selected as 3; the adjustment coefficients of the fourth step ar...

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Abstract

The invention discloses a visual enhancement method for a remote sensing image. The visual enhancement method comprises the following steps: providing a low-resolution multiband remote sensing image;providing a high-resolution remote sensing image which has the same scene and size as the low-resolution multiband remote sensing image; by means of the high-resolution remote sensing image, participating in adjusting the overall dynamic display range of the low-resolution multiband remote sensing image so as to enhance the spatial detail information of each band of the low-resolution multiband remote sensing image; and finally, obtaining the visualized enhanced multiband remote sensing image. The visual enhancement method solves the problem that an existing remote sensing image is poor in visualization effect.

Description

【Technical field】 [0001] The invention relates to an enhancement method for remote sensing images, in particular to a visualization enhancement method for remote sensing images. 【Background technique】 [0002] Some spaceborne / airborne sensors, such as WorldView-3, AVIRIS, etc., can provide multi / hyperspectral remote sensing images with multiple bands. Due to the constraints of existing hardware levels, these image data cannot record the scenes observed by human eyes real information, its brightness, contrast, color, etc. are all limited. Therefore, it is necessary to adjust and enhance the color saturation and detail information of such images to improve the visualization effect and give viewers a more realistic sensory experience. 【Content of invention】 [0003] The purpose of the present invention is to propose a visualization enhancement method for remote sensing images to solve the problem of poor visualization of existing remote sensing images. [0004] The present ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/20G06T5/50G06T3/40
CPCG06T3/4053G06T5/20G06T5/50G06T2207/10032G06T2207/20024
Inventor 李旭蒋瑞拓樊桢珍李立欣
Owner NORTHWESTERN POLYTECHNICAL UNIV
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