Imaging system based on transmission type infrared aperture coding and super-resolution method thereof

Abstract

The invention discloses an imaging system based on transmission type infrared aperture coding and a super-resolution method thereof. The system is composed of a condensing lens, a zoom lens, a compensation lens, a field lens, a convergent lens, a double-slit physical aperture diaphragm and a camera; convex set projection iteration is carried out in a Fourier domain after a series of low-resolutionimages are shot, and a super-resolution image can be obtained until convergence, so pixelation is reduced. According to the invention, the system does not need any mechanical scanning device, is compact in structure, is quick in measurement, is simple in operation, and can achieve the stable and precise measurement. By adopting a transmission type coding imaging system, the loss of incident lightcan be reduced, and the imaging quality is improved; large-view-field super-resolution imaging in the infrared band can be successfully achieved, the resolution limited by the Nyquist sampling frequency of the camera is exceeded, and the target imaging resolution can be improved to the diffraction limit of the lens.

Description

technical field [0001] The invention belongs to computational optical imaging technology, in particular based on a transmission infrared aperture coding imaging system and a super-resolution method. Background technique [0002] Since the world's first digital camera came out in the Philips laboratory in the 1960s, photoelectric imaging technology has undergone continuous innovation. With higher resolution and quality, they have led human beings to initiate endless exploration into the endless world. Factors limiting the imaging resolution of an optical imaging system also extend from the Abbe diffraction limit to the pixel size of the detector. Nowadays, human beings have entered a new information age. As an important data information, high-resolution images are widely used in public security, national defense, geodesic survey, medical treatment and other fields. For example, in the field of public security, video surveillance Accurate license plate numbers and obvious clo...

AI Technical Summary

Problems solved by technology

But this method requires additional moving parts or oscillating mirrors, the system is very complex, and thus reconstructing high-resolution images is a very difficult process

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