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High-speed structured light generation device and three-dimensional single-pixel imaging system

A technology for generating devices and structured light, applied in the direction of using optical devices, measuring devices, optics, etc.

Active Publication Date: 2019-10-18
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the imaging speed of the 3D camera based on stereo vision is mainly limited by the frame rate (ms level) of CCD and CMOS and the complex 3D reconstruction algorithm (the restoration of depth information requires a large amount of image information to be matched between image data and Training); the imaging speed of the camera based on structured light is mainly limited by the modulation rate (kHz) of DMD and the frame rate of CCD and CMOS; while the 3D camera based on time-of-flight requires point-by-point scanning, so the speed is also limited

Method used

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Embodiment Construction

[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] Embodiments of the present invention provide a high-speed structured light generating device and a three-dimensional single-pixel imaging system. The three-dimensional single-pixel imaging technology mainly includes two technical indicators. One is the speed of imaging. It is generally recognized in the industry that the faster the ima...

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Abstract

An embodiment of the present invention provides a high-speed structured light generation device, including: a mode-locked laser, a dispersion compensation fiber, a signal generator, a Mach-Zehnder modulator, a single-mode fiber, a collimator, and a dispersion device. An embodiment of the present invention also provides a three-dimensional single-pixel imaging system, including: the above-mentioned high-speed structured light generating device, a projection lens, a high-speed rotating platform, a lens, an object to be imaged, and a detector. The invention can generate high-speed structured light and perform high-speed three-dimensional single-pixel imaging.

Description

technical field [0001] Embodiments of the present invention relate to the technical fields of high-speed three-dimensional imaging and single-pixel imaging, and in particular, to a high-speed structured light generation device and a three-dimensional single-pixel imaging system. Background technique [0002] The high-speed three-dimensional single-pixel imaging system combines the high-speed single-pixel imaging technology of "time-frequency-space" mapping and photometric stereo vision technology. Firstly, the two-dimensional light intensity distribution of the real scene is reconstructed from different detection angles through single-pixel imaging technology. Then, the photometric stereo vision technology is used to reconstruct the three-dimensional information of the scene from the difference information of the acquired image light intensity distribution. [0003] Traditional 3D imaging technologies are mainly divided into three categories: stereo vision-based, structured ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/24G03B15/02G02F1/21
CPCG02F1/21G03B15/02G01B11/24G02F1/212
Inventor 陈宏伟滕佳洁郭强
Owner TSINGHUA UNIV