A system and method for three-dimensional ranging imaging

Abstract

The invention relates to a system and a method of three-dimension range imaging. The system comprises a digital processor, a light source, a stereo light intensity lighting device, a light signal reception optical device, a single pixel light intensity detector, an AD conversion circuit and a data collection device. Under the control of the digital processor, the stereo light intensity lighting device performs three-dimension light intensity projection of light of the light source according to stereo distribution data, and light signals are reflected when encountering an object. The light signal reception optical device collects the light signals. The single pixel light intensity detector concentrates the light signals and converts the light signals into electric signals. The AD conversion circuit converts the electric signals into digital signals to be collected by the data collection device. The digital signals are sent to the digital processor and stored by the digital processor. Therefore, one time of detection is completed. Compared with the prior art, the system provided by the invention is simple in structure and cheap in device cost, only requires the single pixel detect and a common continuous light illumination light source and does not require a modulation element and a narrow pulse element, and requires no imaging reception lens. The system and the method both have advantages of low measurement frequency, small device bandwidth, large detection angle and the like.

Description

technical field [0001] The invention relates to the technical field of three-dimensional information detection and imaging, in particular to a system and method for performing three-dimensional ranging imaging by using a compressed sensing method, a single-pixel detector and a three-dimensional light intensity distribution method. Background technique [0002] Optical active 3D imaging technology is the key technology for 3D positioning of targets, and it is widely used in biomedicine, machine vision, geographical remote sensing and other fields. Lidar is used as an auxiliary means to track and identify vehicle targets in cities; high-precision 3D imaging systems play an important role in building geographic information systems; and quantum noise or shot noise ultimately limits the measurement accuracy of 3D imaging. When the active lighting light energy is limited, the resolution and accuracy of the 3D imaging system will be limited by the light intensity detector and light...

AI Technical Summary

Problems solved by technology

[0002] Optical active 3D imaging technology is the key technology for 3D positioning of targets, and it is widely used in biomedicine, machine vision, geographical remote sensing and other fields. Lidar is used as an auxiliary means to track and identify vehicle targets in cities; high-precision 3D imaging systems play an important role in building geographic information systems; and quantum noise or shot noise ultimately limits the measurement accuracy of 3D imaging. When the active lighting light energy is limited, the resolution and accuracy of the 3D imaging system will be limited by the light intensity detector and light energy utilization

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