A Two-stage Improvement Method for Robot Based 3D Surface Scanning

International Conference on Robotics and Mechantronics

机械制造;无线电电子学;计算机科学

He, F.B.^1 ; Liang, Y.D.^1,2 ; Wang, R.F.^1 ; Lin, Y.S.^3

School of Mechanical Engineering, Dalian University of Technology, Dalian

116024, China^1

Engineering Training Center, Dalian University of Technology, Dalian

116024, China^2

Department of Computer Science, Dalian Ocean University, Dalian

116023, China^3

关键词: 3D-laserscanning technology;    Improvement methods;    Minimum enclosing ball;    Point cloud data;    Robotic manipulators;    Scanning methods;    Surface scanning;    Surface scanning speed;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/320/1/012006/pdf
DOI  :  10.1088/1757-899X/320/1/012006

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

As known that the surface of unknown object was difficult to measure or recognize precisely, hence the 3D laser scanning technology was introduced and used properly in surface reconstruction. Usually, the surface scanning speed was slower and the scanning quality would be better, while the speed was faster and the quality would be worse. In this case, the paper presented a new two-stage scanning method in order to pursuit the quality of surface scanning in a faster speed. The first stage was rough scanning to get general point cloud data of object's surface, and then the second stage was specific scanning to repair missing regions which were determined by chord length discrete method. Meanwhile, a system containing a robotic manipulator and a handy scanner was also developed to implement the two-stage scanning method, and relevant paths were planned according to minimum enclosing ball and regional coverage theories.