Calibration Methods of Projector-Camera Structured Light System: A Comparative Analysis

Calibration is a critical issue in the development of projector-camera-based structured light systems. In this paper, underlying calibration principle and research progress are briefly reviewed firstly. Then, three representative calibration methods, i.e. the ProcamCalib, SLSCalib and 3DCalib methods are introduced in details. To compare the performance of various calibration approaches, a prototype of projector-camera system is constructed and calibrated by three calibration methods respectively. To evaluate the calibration accuracy, three metric error terms are used based on a reference plane with printed markers. By the analysis of experimental results, some conductive conclusions are obtained which can provide guidance for the researchers in structured light research domain.