Method and device for correcting thermal radiation effect based on Green's function biharmonic and spline interpolation

A technology of Green's function and spline interpolation, applied in the field of interdisciplinary science, can solve problems such as the effective correction of aerothermal radiation images, and achieve the effect of fast algorithm speed, high interpolation accuracy, and fewer iterations

Active Publication Date: 2022-05-10
WUHAN INSTITUTE OF TECHNOLOGY
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Problems solved by technology

[0004] In view of this, it is necessary to provide a method and device for correcting aero-optical thermal radiation effects based on Green's function biharmonic and spline interpolation to solve the problem of how to effectively correct aerothermal radiation images

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  • Method and device for correcting thermal radiation effect based on Green's function biharmonic and spline interpolation
  • Method and device for correcting thermal radiation effect based on Green's function biharmonic and spline interpolation
  • Method and device for correcting thermal radiation effect based on Green's function biharmonic and spline interpolation

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[0044] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.

[0045] An embodiment of the present invention provides a method for correcting aero-optical thermal radiation effects based on Green's function biharmonic and spline interpolation, such as figure 1 As shown, the method includes:

[0046] Step S101: Obtain an aero-optical thermal radiation degradation image, and filter the thermal radiation degradation image to obtain a thermal radiation low-frequency image.

[0047] Among them, the degraded image is a damaged image, and the reasons for the formation of the degraded image of the aerothermal radiation effect include that the high-temperature ga...

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Abstract

The invention relates to a thermal radiation effect correction method and device based on Green's function biharmonic and spline interpolation, which comprises: acquiring an aero-optical thermal radiation degradation image, and filtering the thermal radiation degradation image to obtain a thermal radiation low-frequency image; The radiation low-frequency image is down-sampled to obtain sampling points in the down-sampled image. The interpolation surface is fitted by the biharmonic and spline interpolation method based on Green's function for the sampling points; the interpolation surface is input into the pre-established image correction model, and the clear image and thermal radiation effect bias field are solved by the alternating iterative minimum method. The algorithm of the method of the invention has fast running speed and relatively few iterations, and can effectively correct the thermal radiation degradation image.

Description

technical field [0001] The invention relates to the field of interdisciplinary science and technology combining aero-optics and image processing, in particular to an aero-optical thermal radiation effect correction method and device based on Green's function biharmonic and spline interpolation. Background technique [0002] When the aircraft flies in the atmosphere at high speed, when the airflow comes into contact with the optical hood of the detector, the airflow is compressed and stagnant, and the kinetic energy of the airflow in the boundary layer near the surface of the detector hood is dissipated and converted into heat energy. The air in turn heats the hood, a phenomenon known as aerodynamic heating. The higher the altitude the aircraft flies, the more severe the aerodynamic heating. The aerodynamic heating phenomenon will produce a thermal radiation effect on the optical head cover of the detector, which will seriously affect the detection performance of the imaging...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T5/20G06T3/40
CPCG06T5/002G06T5/005G06T5/20G06T3/4007
Inventor 洪汉玉刘径托时愈张丽琴杜敦伟赵欣张天序桑农
Owner WUHAN INSTITUTE OF TECHNOLOGY
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