Surface Measurement Based on Instantaneous Random Illumination |
| |
Authors: | Zhang Hui Zhang Liyan Wang Hongtao Chen Jianfu |
| |
Affiliation: | aJiangsu Key Laboratory of Precision and Micro-manufacturing Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| |
Abstract: | This article introduces a surface measurement system which is able to take a measurement in an extremely short period of less than 2 milliseconds. It is composed of two cameras together with a specifically designed projector that projects an instantaneous random image pattern onto the objective surface. With the aid of the projected pattern, a match of image with corresponding sub-pixel is steadily established and a cluster of dense 3D points is obtained at the same time. A detailed discussion about the design and implementation of hardware is presented. A system calibration algorithm taking into account the possible geometric error of the planar calibration board is also put forward. Experiments are carried out to evaluate the system accuracy and its capability of capturing details of complex surfaces. |
| |
Keywords: | surface measurement stereo matching calibration instantaneous random illumination |
本文献已被 万方数据 ScienceDirect 等数据库收录! |