Joint Calibration of Cameras and Projectors for Multiview Phase Measuring Profilometry

Hyeongjun Cho, Min H. Kim

Abstract: Existing camera-projector calibration for phase-measuring profilometry (PMP) is valid for only a single view. To extend a single-view PMP to a multiview system, an additional calibration, such as Zhang’s method, is necessary. In addition to calibrating phase-to-height relationships for each view, calibrating parameters of multiple cameras, lenses, and projectors by rotating a target is indeed cumbersome and often fails with the local optima of calibration solutions. In this work, to make multiview PMP calibration more convenient and reliable, we propose a joint calibration method by combining these two calibration modalities of phase-measuring pro-filometry and multiview geometry with high accuracy. To this end, we devise (1) a novel compact, static calibration target with planar surfaces of different orientations with fiducial markers and (2) a joint multiview optimization scheme of the projectors and the cameras, handling nonlinear lens distortion. First, we automatically detect th

External IDs:dblp:conf/visigrapp/Cho025