Ultrafast recovery method and system for twin image of pneumatic optical effect target

Abstract

The invention discloses an ultrafast restoration method for a target twin image based on an aerodynamic optical effect, and the method comprises the following steps: S1, rapidly generating two frames of target twin images through a camera in a high-speed flow field; S2, carrying out fast discrete Fourier transform on the two frames of target twin images, and establishing image turbulence fuzzy degradation models respectively; S3, merging and calculating the two image turbulence fuzzy degradation models, eliminating the same noise item and the same item in the degradation model, adding a non-negative constraint item and a spatial correlation constraint item, and solving to obtain a fuzzy kernel of each frame of target twin image; S4, respectively carrying out differential continuous continuation on the boundaries of the two frames of target twin images, and inhibiting a boundary ringing effect; S5, according to the solved blurring kernel, carrying out the restoration of two frames of target twin images through a fast non-blind deconvolution method of super-Laplacian prior; and S6, normalizing the restored images to obtain clear images. According to the method, ultrafast restoration can be carried out on the aerodynamic optical effect degraded image with the target twin image.

Description

technical field [0001] The invention belongs to the fields of aero-optical effect correction and image processing, and in particular relates to an ultra-fast recovery method for a twin image of an aero-optic effect target. Background technique [0002] When a high-speed aircraft flies in the atmosphere at high speed, due to the relative motion and interaction with the surrounding air, the aerodynamic flow field is generated, which seriously degrades the function of the aircraft's optical imaging detection system. The physical process and phenomenon is called the aero-optical effect. Due to the complexity of the environment, the imaging system will be disturbed by the aero-optic effect, resulting in turbulent degradation of the acquired image, which will affect the recognition and tracking of the target. The high-speed movement of the aircraft leaves a shorter time interval for the completion of detection processing, which poses a severe challenge to the limited processing ca...

AI Technical Summary

Problems solved by technology

However, due to the complexity of its algorithm design, large amount of calculation, and long time consumption, it is difficult to meet the requirements of fast processing, especially for high-speed aircraft, real-time performance is very important

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