Title :
A 3D Shape Measurement System Based on Random Pattern Projection
Author :
Shi, Chun-Qin ; Zhang, Li-Yan
Author_Institution :
Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
This paper presents a patented three-dimensional (3D) shape measurement system, ReCreator, which is mainly composed of two CCD cameras and a random pattern projector with fixed geometry. It can work in the binocular mode, where the stereo image pair is utilized to reconstruct the 3D point cloud in the common field of view of the two cameras; while in the monocular mode, each single camera and the random pattern projector constitute a measuring unit respectively to alleviate the highlight and occlusion effect. The design and the calibration of the random pattern projector, which is the key ingredient for enabling the system, are discussed in detail. The system algorithms are partially implemented with NVIDIA Graphics Processing Units (GPU) in the Compute Unified Device Architecture (CUDA) programming environment, which proves effective to accelerate the computation. Experiments are conducted to validate the precision, rapidity and data integrity of the measurement system.
Keywords :
computer graphic equipment; coprocessors; image reconstruction; parallel programming; shape recognition; solid modelling; stereo image processing; 3D point cloud reconstruction; 3D shape measurement system; CUDA programming environment; NVIDIA graphics processing units; ReCreator measurement system; binocular mode; compute unified device architecture; monocular mode; random pattern projection; random pattern projector; stereo image pair; Calibration; Cameras; Graphics processing unit; Image reconstruction; Lenses; Shape measurement; Three dimensional displays;
Conference_Titel :
Frontier of Computer Science and Technology (FCST), 2010 Fifth International Conference on
Conference_Location :
Changchun, Jilin Province
Print_ISBN :
978-1-4244-7779-1
DOI :
10.1109/FCST.2010.28
