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

A remote sensing image and cloud layer technology, which is applied in the field of image processing, can solve the problems of low precision of cloud layer detection technology, achieve the effects of reducing storage space and transmission bandwidth consumption, improving image quality, and increasing image compression ratio

Active Publication Date: 2022-02-08
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 and device in remote sensing image and storage medium
  • Cloud layer detection and image compression method and device in remote sensing image and storage medium
  • Cloud layer detection and image compression method and device in remote sensing image and storage medium

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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 invention provides a cloud layer detection and image compression method and device in a remote sensing image and a storage medium. The cloud layer detection method comprises the steps of obtaining an original remote sensing image; determining a first cloud layer area mask image according to the original remote sensing image and a preset color threshold range; determining a gray threshold according to the gray value of the first cloud layer area mask image; determining a second cloud layer area mask image based on the gray threshold and the gray value of each pixel point of the first cloud layer area mask image; clustering pixel points of the second cloud layer area mask image, and determining a third cloud layer area mask image according to a clustering result, wherein an area corresponding to the third cloud layer area mask image is a target cloud layer area. Multi-dimensional features (a preset color threshold range, gray values of pixel points in the remote sensing image and clustering processing on the pixel points in the remote sensing image) are adopted to carry out cloud layer detection on the remote sensing image, and the accuracy of cloud layer detection is improved.

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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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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