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Cloud detecting method and system based on threshold value and regulation least square

A least squares method and least squares technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems of low detection accuracy and low calculation efficiency, so as to improve calculation efficiency, reduce complexity and improve accuracy Effect

Active Publication Date: 2015-03-25
SATELLITE ENVIRONMENT CENT MINIST OF ENVIRONMENTAL PROTECTION +1
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Problems solved by technology

[0005] In view of this, the present invention provides a cloud detection method and system based on threshold and regularized least squares to solve the problem of low cloud detection accuracy and low computational efficiency of the remote sensing image data of the Ziyuan No. 3 satellite in the prior art. question

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  • Cloud detecting method and system based on threshold value and regulation least square
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  • Cloud detecting method and system based on threshold value and regulation least square

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Embodiment Construction

[0036] 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. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] An embodiment of the present invention provides a cloud detection method based on threshold and regularized least squares, the flow chart of which is as follows figure 1 shown, including:

[0038] S101: Using a threshold method to perform initial detection on remote sensing images, and obtain initial cloud data after detection;

[0039] The reflectance of clouds in the visible light band is higher than that of vegetation, soil, and water, especially in...

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Abstract

The invention provides a cloud detecting method and system based on a threshold value and a regulation least square. The method comprises the steps that a threshold value method is utilized for carrying out initial detecting on a remote sensing image and obtaining detected initial cloud data; a regulation least square method is utilized for classifying the initial cloud data and obtaining classified cloud data. According to the cloud detecting method and system based on the threshold value and the regulation least square, at first, the threshold value method is utilized for carrying out initial detecting on the remote sensing image and obtaining the detected initial cloud data, then the regulation least square method is utilized for classifying the initial cloud data and obtaining the classified cloud data, and therefore the precision of cloud detection is greatly improved; moreover, after initial detection is carried out, class numbers classified by using the regulation least square method are reduced, the complexity of calculation is reduced, and the calculation efficiency of cloud detection is improved.

Description

technical field [0001] The present invention relates to the technical field of environmental monitoring, more specifically, to a cloud detection method and system based on threshold and regularized least squares. Background technique [0002] Although the remote sensing images of remote sensing satellites are of great significance to infrastructure construction, resource development and utilization, and natural disaster prevention and control. However, in the process of using remote sensing images to obtain surface and atmospheric data, obstacle clouds will interfere with the data, which greatly reduces the effective utilization of surface and atmospheric data. Based on this, how to accurately detect clouds and realize the separation of clouds and clear sky is an important part of remote sensing image preprocessing, and it is also a necessary basic work when inverting various parameters of the atmosphere and the surface. [0003] At present, there are many cloud detection a...

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Application Information

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IPC IPC(8): G06K9/62
CPCG06F18/2415
Inventor 王桥朱利李家国殷亚秋吴传庆王雪蕾姚延娟吴迪
Owner SATELLITE ENVIRONMENT CENT MINIST OF ENVIRONMENTAL PROTECTION
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