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Articles

Vol. 6 No. 1 (2020): Special Issue: Proceedings of CVIS 2020

Constraints for Time-Multiplexed Structured Light with a Hand-held Camera

DOI
https://doi.org/10.15353/jcvis.v6i1.3562
Submitted
January 15, 2021
Published
2021-01-15

Abstract

Multi-frame structured light in projector-camera systems affords high-density and non-contact methods of 3D surface reconstruction. However, they have strict setup constraints which can become expensive and time-consuming. Here, we investigate the conditions under which a projective homography can be used to compensate for small perturbations in pose caused by a hand-held camera. We synthesize data using a pinhole camera model and use it to determine the average 2D reprojection error per point correspondence. This error map is grouped into regions with specified upper-bounds to classify which regions produce sufficiently minimal error to be considered feasible for a structured-light projector-camera system with a hand-held camera. Empirical results demonstrate that a sub-pixel reprojection accuracy is achievable with a feasible geometric constraints