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Establishing technology method of microphysical model of atmospheric particulates

A physical model and aerosol particle technology, applied in the analysis of materials, instruments, etc., can solve problems such as large limitations, high requirements, and difficult image data acquisition

Active Publication Date: 2017-09-22
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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Problems solved by technology

However, this technology has high requirements for aerosol sampling and electron transmission microscope operation, especially the acquisition of multi-view electron microscope image data is difficult and limited

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  • Establishing technology method of microphysical model of atmospheric particulates
  • Establishing technology method of microphysical model of atmospheric particulates
  • Establishing technology method of microphysical model of atmospheric particulates

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Embodiment Construction

[0022] The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0023] 1. Aerosol Microscopic Image Segmentation

[0024] Since aerosol particles usually have no fixed shape, the geometric distribution is random, and the structure is complex and diverse. Therefore, the present invention is based on the microscopic image of aerosol particles obtained by the electron microscope, and firstly uses the image segmentation method of multi-feature mean shift to determine the precise position and area of ​​the aerosol particles on the microscope image. Among them, ...

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Abstract

The invention discloses an establishing technical method of a microphysical model of atmospheric particulates. The method comprises the following steps: determining the accurate positions and areas of the atmospheric particulates on a microscope image through multi-feature mean shift image segmentation, based on an electron microscope image of the atmospheric particulates; obtaining rich morphological characteristics through a morphological attribute section, obtaining accurate geometrical information through an angular point and edge detection technology, generating a corresponding texture characteristic through a gray co-occurrence matrix, and improving the segmentation accuracy through various characteristics; obtaining geometrical information, such as the length, width, boundary length and incircle / circumcircle radiuses, according to a microscope scale; directly reestablishing a three-dimensional microphysical model from a single-perspective two-dimensional projection image according to auxiliary information, such as chemical components, volume and surface roughness, the morphological parameters of typical particulates and image shadow recovery depth information. A more real simulation result is obtained in a manner of generating a plurality of microphysical models to perform optimization.

Description

technical field [0001] The invention relates to a technical method for constructing a microphysical model of atmospheric particulate matter, which is used for simulating microscopic physical and chemical characteristics of atmospheric particulate matter under weather such as haze and sand dust. Background technique [0002] Particulate matter in the real atmosphere has the characteristics of random shape, diverse components, and complex mixing methods. Its microscopic physical and chemical properties are one of the key factors that restrict the accuracy of remote sensing inversion of atmospheric parameters and radiative forcing assessment. In remote sensing inversion and climate assessment, the microphysical model of atmospheric particulate matter is generally simplified to a volume-equivalent sphere or a multilayer sphere (Bohren, 2008). However, the inversion results based on this simplified model have larger errors compared with the actual observation data ( et al., 201...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00
CPCG01N15/00
Inventor 程天海吴俣
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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