Multispectral imager based on light fieldd imaging technique

Abstract

The invention relates to a multispectral imager based on the light field imaging technique. The multispectral imager based on the light field imaging technique solves the problem that an existing multispectral imager cannot achieve simultaneous focus imaging of targets with different distances away from the multispectral imager within the field range and cannot recover an image out of focus. The multispectral imager based on the light field imaging technique comprises a visual camera lens, a visual microlens array, a visual image detector, a near-infrared camera lens, a near-infrared microlens array, a near-infrared image detector, an ultraviolet camera lens, an ultraviolet microlens array, an ultraviolet array image detector, an image acquisition and control device, and an image processing and display device. According to the multispectral imager based on the light field imaging technique, due to the fact that the microlens arrays are additionally arranged at the front ends of the image detectors in all wave bands, four-dimensional light field image information instead of traditional two-dimensional image information is recorded and saved, no hardware focusing auxiliary device is needed, refocusing of different targets within the field range can be achieved through reconstruction of a two-dimensional image of an image processing module, and the multi-target and multiband image analyzing performance of the multispectral imager is further improved.

Description

technical field [0001] The invention relates to an imaging device, in particular to a multispectral imager based on light field imaging technology. Background technique [0002] Existing multispectral imagers mainly include optical lenses, detectors, image acquisition and control devices, and image processing and display devices. It is mostly used for reconnaissance and monitoring of multiple targets within a large field of view. If you want to achieve multi-spectral band analysis of multiple monitoring targets at different distances within a large field of view, you need to adjust the optical system parameters or the position of the detector target surface, and then aim at each monitoring target and perform mechanical focus shooting in turn. The multi-spectral imager projects the light field information emitted by the monitoring target in various directions onto the detector target surface, and realizes two-dimensional imaging of the shooting target through photoelectric c...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem that the existing multi-spectral imager cannot simultaneously focus and image targets at different distances within the field of view and cannot recover out-of-focus images, and provides a multi-band imaging method for the entire field of view using light field imaging technology. , a multispectral imager based on light field imaging technology

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