Cirrus cloud infrared image simulation method based on power spectrum

A technology of infrared image and simulation method, which is applied in the field of environmental simulation, and can solve problems that do not conform to the direction characteristics of cirrus image

Inactive Publication Date: 2014-05-07
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology

[0004] In the existing method, the power spectrum function is used to construct the cloud background image. The function model does not include the parameter factors relate

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  • Cirrus cloud infrared image simulation method based on power spectrum
  • Cirrus cloud infrared image simulation method based on power spectrum
  • Cirrus cloud infrared image simulation method based on power spectrum

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Embodiment Construction

[0034] The following describes a power spectrum-based infrared image simulation method of cirrus clouds provided by the present invention with reference to the accompanying drawings and embodiments:

[0035] Such as figure 1 As shown, a cirrus infrared image simulation method based on power spectrum includes the following steps:

[0036] Step S1: Select the initial power spectrum function, and use the directivity factor to describe the directivity of the power spectrum;

[0037] Step S2: Construct a power spectrum model that meets the characteristics of cirrus clouds;

[0038] Step S3: Constructing the frequency spectrum function of the cirrus infrared simulation image (hereinafter referred to as the image);

[0039] Step S4: Establish an image gray-scale matrix in the spatial domain to form an image initially;

[0040] Step S5: Make a histogram plan for the image and correct the image so that the output image is more realistic;

[0041] Step S6: Given the values ​​of the parameters in th...

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Abstract

The invention belongs to the field of environment simulation, and specifically relates to a cirrus cloud infrared image simulation method based on a power spectrum, for the purpose of enabling a generated cirrus cloud to be more real and be provided with a direction characteristic. The method comprises the following steps: selecting an initial power spectrum function, and describing the directivity of the power spectrum by use of a directivity factor; constructing a power spectrum model according with a cirrus cloud characteristic; constructing the frequency spectrum function of a cirrus cloud infrared simulation image; establishing the image gray scale matrix of a space domain, and preliminarily forming the cirrus cloud infrared simulation image; and performing histogram planning on the image, and correcting the cirrus cloud infrared simulation image to enable the output cirrus cloud infrared simulation image to be more realistic. Values of parameters in a power spectrum model are given so that cirrus cloud infrared simulation images in different forms are constructed. By using the method provided by the invention, a generated image is provided with a direction distribution characteristic and has similar frequency domain and spatial domain characteristics as a real cirrus cloud image.

Description

Technical field [0001] The invention belongs to the field of environment simulation, and specifically relates to a cirrus infrared image simulation method based on a power spectrum. Background technique [0002] Among various natural backgrounds, clouds are one of the frequently occurring backgrounds. There are many types of clouds, such as cirrus clouds, cumulus clouds, stratus clouds, etc., each of which exhibits different image characteristics. This patent proposes a method for establishing an infrared simulation image for cirrus clouds, and provides image signal input for the detector to recognize the background of cirrus clouds. [0003] Image simulation work has been carried out at home and abroad for many years, and there are various methods and application fields. It is not possible to list them here. It is worth noting that in recent years, with the development of digital image technology and practical application requirements, such a phenomenon has appeared. This kind o...

Claims

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Application Information

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IPC IPC(8): G06T19/00
Inventor 刘浩刘兴润李霞董雁冰王俊
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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