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Cloud layer detection and image compression method, device and storage medium in remote sensing images

A remote sensing image and cloud layer technology, applied in the field of image processing, can solve the problems of low accuracy of cloud layer detection technology, reduce the consumption of storage space and transmission bandwidth, improve the high image compression ratio, and reduce the compression cost.

Active Publication Date: 2022-04-26
成都国星宇航科技股份有限公司
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Problems solved by technology

[0004] The purpose of the embodiment of the present application is to provide a method, device and storage medium for cloud layer detection and image compression in remote sensing images, so as to improve the problem of low accuracy of the existing cloud layer detection technology

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  • Cloud layer detection and image compression method, device and storage medium in remote sensing images

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Embodiment Construction

[0063] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0064] With the continuous development of remote sensing technology, the rate of satellite acquisition of remote sensing image data continues to increase, and the real-time acquisition rate can reach several Gbps. However, the current satellite-ground image transmission rate is only about 500 Mbps, and there is a large gap between the two.

[0065] Because there are a lot of clouds over the earth, some areas in the obtained original remote sensing images will be blocked by clouds. Areas covered by clouds have no analytical value. Therefore, cloud detection technology can be used to detect cloud areas in remote sensing images and process these areas, thereby reducing the consumption of storage space and transmission bandwidth for invalid areas in remote sensing images. consumption. However, the exi...

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Abstract

The present application provides a cloud layer detection and image compression method, device and storage medium in a remote sensing image. The cloud layer detection method includes: acquiring the original remote sensing image; determining the first cloud layer area mask according to the original remote sensing image and a preset color threshold range image; determine the grayscale threshold value according to the grayscale value of the first cloud layer area mask image; determine the second cloud layer area mask image based on the grayscale threshold value and the grayscale value of each pixel of the first cloud layer area mask image; The pixel points of the cloud area mask image are clustered, and a third cloud area mask image is determined according to the clustering result, wherein the area corresponding to the third cloud area mask image is the target cloud area. Using multi-dimensional features (preset color threshold range, gray value of pixels in remote sensing images, and clustering processing of pixels in remote sensing images) to detect clouds in remote sensing images to improve the accuracy of cloud detection.

Description

technical field [0001] The present application relates to the field of image processing, in particular, to a cloud layer detection and image compression method, device and storage medium in remote sensing images. Background technique [0002] On average, 1 / 3 to 1 / 2 of the earth is covered with clouds, and satellite remote sensing images are affected by cloud occlusion, and there will be a large amount of invalid image data (cloud image data). During the transmission of satellite remote sensing image data from the satellite to the ground, since the satellite remote sensing image data contains a large amount of invalid image data, it will consume a large amount of storage space and transmission bandwidth, and reduce the bandwidth utilization rate of effective image data. [0003] Therefore, it is necessary to detect cloud data in satellite remote sensing images through cloud detection technology, and then remove the data in the cloud area, thereby reducing the bandwidth utiliz...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06V20/13G06V10/762G06K9/62
CPCG06F18/23
Inventor 陆川周舒婷徐康
Owner 成都国星宇航科技股份有限公司
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