The invention discloses a
binocular stereo vision three-dimensional measurement method based on line
structured light scanning, which comprises the steps of performing stereo calibration on binocularindustrial cameras, projecting
laser light bars by using a line
laser, respectively acquiring left and right
laser light bar images, extracting light bar center coordinates with sub-pixel accuracy based on a Hessian
matrix method, performing light bar matching according to an epipolar constraint principle, and calculating a
laser plane equation; secondly, acquiring a line
laser scanning image of aworkpiece to be measured, extracting coordinates of the image of the workpiece to be measured, calculating world coordinates of the workpiece to be measured by combining binocular camera calibrationparameters and the
laser plane equation, and recovering the three-dimensional surface
topography of the workpiece to be measured. Compared with a common three-dimensional measurement
system combininga
monocular camera and line
structured light, the
binocular stereo vision three-dimensional measurement method avoids complicated
laser plane calibration. Compared with the traditional stereo vision method, the
binocular stereo vision three-dimensional measurement method reduces the difficulty of
stereo matching in binocular stereo vision while ensuring the measurement accuracy, and improves the robustness and the
usability of a visual three-dimensional measurement
system.