Introduction

Optical three-dimensional sensing refers to methods and technologies that use optical means to obtain three-dimensional spatial information of objects. It is of great significance and has broad application prospects in fields such as machine vision, physical profiling, industrial measurement, biomedicine, film and television special effects, and virtual reality. This experimental system adopts an open structure, integrates professional calibration technology, and innovatively uses two active three-dimensional sensing methods, namely laser line structured light and grating surface structured light, to measure three-dimensional surface shapes of objects. Through experiments, students can fully understand and master the working principles of line and surface structured light three-dimensional sensing and the characteristics of different measurement methods. It is an ideal teaching experiment system for Optoelectronics and the majors related to Measurement&Control.

Experiments

Laser line scanning 3D measuring system construction experiment;

Laser line scanning 3D measurement system calibration experiment;

Experiment on the principle of laser triangulation measurement;

Experiment on measuring the 3D surface shape of an object using line structured light;

Experiment on building a grating surface structured light 3D measuring system;

Calibration experiment of grating surface structured light 3D measurement system;

Experiment on the principles of phase profilometry;

Experiment on measuring 3D surface shape of an object using grating surface structured light.

Experimental Knowledge

Active three-dimensional sensing, camera calibration, laser line scanning, laser triangulation, phase profilometry, and identical point matching.

Typical Testing

Calibration Board and Measured Object                   Software Calibration Interface

Measure Results                                             Sine Grating