A transmission-based infrared aperture coding imaging system and its super-resolution method

An imaging system, transmission technology, applied in parts of TV system, image communication, instrument, etc., can solve problems such as difficulty in reconstructing high-resolution images, system complexity, etc., achieve fast measurement, compact system structure, and improve imaging quality Effect

Active Publication Date: 2021-10-08
NANJING UNIV OF SCI & TECH
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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

Method used

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  • A transmission-based infrared aperture coding imaging system and its super-resolution method
  • A transmission-based infrared aperture coding imaging system and its super-resolution method
  • A transmission-based infrared aperture coding imaging system and its super-resolution method

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Embodiment Construction

[0013] to combine figure 1 , the present invention is based on a transmissive infrared aperture coding imaging system, which consists of a condenser lens 1, a zoom lens 2, a compensation lens 3, a field lens 4, a converging lens 5, a double-slit physical aperture stop 6, and a camera 7, and adopts a perspective An optical path structure, the transmission optical path structure is composed of a condenser lens 1 , a zoom lens 2 , a compensation lens 3 , a field lens 4 , a converging lens 5 , and a double-slit physical aperture stop 6 . Condensing lens 1, variable power lens 2, compensation lens 3, field lens 4, and converging lens 5 form an imaging lens group. In this optical path structure, the double-slit physical aperture stop 6 is placed on the aperture plane of the imaging lens group, The camera 7 is located on the rear focal plane of the imaging lens group, which can realize the modulation function of the aperture plane of the imaging lens group and reduce the aberration o...

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Abstract

The invention discloses a transmission-based infrared aperture coding imaging system and its super-resolution method, which is composed of a condenser lens, a zoom lens, a compensation lens, a field lens, a convergence lens, a double-slit physical aperture diaphragm, and a camera. After a series of low-resolution images, convex set projection iterations are performed in the Fourier domain until convergence, and super-resolution images can be obtained to reduce pixelation. The invention does not need any mechanical scanning device, has compact structure, fast measurement, easy operation, and stable and accurate measurement; the use of a transmission coding imaging system can reduce the loss of incident light and improve imaging quality; it can successfully realize large field of view in the infrared band Field super-resolution imaging, beyond the resolution limited by the Nyquist sampling frequency of the camera, can improve the target imaging resolution 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/33H04N5/225H04N5/232G02B27/58
CPCH04N5/33G02B27/58H04N23/55H04N23/80
Inventor 左超王博文陈钱胡岩孙佳嵩张林飞李加基范瑶顾国华
Owner NANJING UNIV OF SCI & TECH
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