Co-Phased 360-Degree Profilometry of Discontinuous Solids with 2-Projectors and 1-Camera

TL;DR

This paper introduces a co-phased 360-degree profilometer using two projectors and one camera, capable of digitizing discontinuous objects with diffuse surfaces by coherently combining phase signals to overcome shadow issues.

Contribution

It presents a novel 360-degree profilometry method that effectively handles discontinuous solids and surface shadows using a dual-projector, single-camera setup with co-phased fringe projection.

Findings

Successfully digitizes discontinuous objects with diffuse surfaces.

Overcomes shadow problems caused by object discontinuities.

Provides a coherent phase addition technique for improved 3D profiling.

Abstract

Here we describe a co-phased 360-degree fringe-projection profilometer which uses 2-projectors and 1-camera and can digitize discontinuous solids with diffuse light surface. This is called co-phased because the two phase demodulated analytic-signals from each projection are added coherently. This 360-degree co-phased profilometer solves the self-generated shadows cast by the object discontinuities due to the angle between the camera and the single white-light fringe projector in standard profilometry.