A precise 3D scanning method using strero vision with multipoint markers for rapid workpiece localization

초록

Workpiece localization is an essential process in modern engineering that relies on three-dimensional scanning to measure shape and position. We propose a three-dimensional scanning method using stereo vision with our designed markers and a novel stitching process. Our designed marker includes a set of nine designed points in a marker which increases the measurement accuracy. In addition, sets of marker points in multiple image shots are stitched together to accurately position the markers in our stitching process. Repeatability values measured in-plane are 7.03 and 8.14 micrometers in x and y-direction, respectively. Repeatability in z-direction (out-of-plane) is 19.71 micrometers. We also validated the performance of our method by recording displacement measurement error. The average error while measuring the displacement of 1 mm was 5.90 micrometers and its standard deviation 3.08 micrometers with repeated tests. © 2022, The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature.

키워드