A dual-band time-domain compressed sensing high-speed imaging method and device

Abstract

The invention provides a dual-band time domain compressed sensing high-speed imaging method and device. Aiming at a high-speed moving object, the characteristic of overturning of a digital micromirrordevice is utilized, and the light energy in two directions is respectively used for imaging at visible light and infrared bands; in combination with a time domain compressed sensing imaging method, the detail information at double wavebands of the high-speed moving target is obtained at the same time, and a video reconstruction algorithm based on compressed sensing is used to reconstruct the shotdouble-waveband low-speed video into a double-waveband target high-speed video. According to the invention, the method can obtain the high-speed moving target video with more detail information whilethe data conversion bandwidth of the imaging camera is not increased, thereby solving the problem of the strict requirements of high-speed imaging for high sensitivity and ultrahigh data bandwidth ofthe camera. Meanwhile, through the characteristics of the optical modulator of the digital micromirror device, the visible light and infrared high-speed imaging light paths can be obtained at the same time under the condition that no additional device is added, the light energy is fully utilized, and the utilization rate of the energy is improved.

Description

technical field [0001] The invention relates to a high-speed imaging method and device for dual-band time-domain compressed sensing, in particular to a method and device for simultaneously obtaining imaging information of a high-speed moving target in two bands by using a digital micromirror device and a low-speed response camera, and belongs to the field of imaging technology . Background technique [0002] With the development and progress of science, the requirements for the spatial resolution and temporal resolution of imaging cameras are getting higher and higher in the fields of visual enjoyment of the human eye, scientific research, industrial applications, and national defense monitoring. High-speed cameras are widely used because they can provide rich process images and complete detailed information. Due to the limitation of reading speed and transmission data bandwidth, high-speed cameras often sacrifice the spatial resolution of the camera in order to meet the re...

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problems that infrared high-speed imaging cameras rely on high-bandwidth equipment and difficult manufacturing processes. At the same time, in order to be able to perform simultaneous imaging in visible light and infrared dual-bands, thereby obtaining high-speed motion information of targets in two bands, A high-speed imaging method and device for dual-band time-domain compressed sensing are proposed

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