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An atmospheric path radiation transmission calculation and real-time rendering method

A technology of atmospheric path radiation and real-time rendering, which is applied in computing, special data processing applications, instruments, etc., can solve the problems of not satisfying atmospheric path radiation transfer calculation and real-time rendering, etc., to achieve great use value, improve rendering speed, and realize real-time rendering. rendering effect

Active Publication Date: 2019-05-21
XIDIAN UNIV
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Problems solved by technology

None of the above models satisfy the calculation and real-time rendering of atmospheric-pass radiation transfer in the infrared band

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  • An atmospheric path radiation transmission calculation and real-time rendering method
  • An atmospheric path radiation transmission calculation and real-time rendering method
  • An atmospheric path radiation transmission calculation and real-time rendering method

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Embodiment Construction

[0052] The present invention will be described in further detail below in conjunction with specific examples, but the embodiments of the present invention are not limited thereto.

[0053] Please refer to figure 1 , figure 1 The flow chart of the large-scale radiative transfer calculation and real-time rendering method provided by the embodiment of the present invention, the specific steps are as follows:

[0054] Step 1. Establish a physical model for calculation of large-scale radiative transfer.

[0055] Establishing the calculation physical model of large-pass radiation transfer includes: establishing the calculation physical model of large-pass radiation transfer according to solar radiation, atmospheric radiation scattering to the sun, atmospheric self-radiation, and atmospheric radiation scattering to the surface.

[0056]Specifically, the large-scale radiative transfer calculation physical model combines the Bruneton atmospheric model and introduces the CO 2 、H 2 O...

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Abstract

The invention relates to an atmospheric path radiation transmission calculation and real-time rendering method. The method comprises the following steps: establishing an atmospheric path radiation transmission calculation physical model; Determining a mapping relation between the atmospheric path radiation transmission data and the texture coordinates; Obtaining pre-calculated atmospheric path radiation transmission data according to the atmospheric path radiation transmission calculation physical model; And rendering the pre-calculated atmospheric path radiation transmission data according tothe mapping relation between the atmospheric path radiation transmission data and the texture coordinates. An embodiment of the invention provides an atmospheric path radiation transmission calculation model considering atmospheric Mie scattering, Rayleigh scattering and atmospheric molecule absorption effects, atmospheric infrared radiation is calculated, atmospheric path radiation under an infrared band is rendered, and the defect that an existing model does not meet atmospheric path radiation transmission calculation and rendering under the infrared band is overcome.

Description

technical field [0001] The invention belongs to the fields of atmospheric physics and computer graphics, and in particular relates to a large-pass radiation transfer calculation and real-time rendering method. Background technique [0002] In digital earth technology, the influence of atmospheric radiation transmission on digital earth scene is very important. The effects of atmospheric scattering and atmospheric absorption on solar radiation and surface radiation cannot be ignored. [0003] At present, there are several atmospheric scattering rendering methods in the visible light band: T.Nishita et al. proposed the Nishita93 model in 1993 and 1996 successively. Among them, the Nishita93 model only considers a single scattering, and the Nishita96 model realizes two scatterings, and only supports observations inside the atmosphere. So it is not suitable for atmospheric effect rendering from space perspective. [0004] O'Neal et al. proposed a rendering method that can ach...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 吴鑫丁国鹏刘凯飞程强谢建
Owner XIDIAN UNIV
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