Abstract
Fringe projection profilometry is a well-known technique to digitize 3-dimensional (3D) objects and it is widely used in robotic vision and industrial inspection. Probably the single most important problem in single-camera, single-projection profilometry are the shadows and specular reflections generated by the 3D object under analysis. Here a single-camera along with N-fringe-projections is (digital) coherent demodulated in a single-step, solving the shadows and specular reflections problem. Co-phased profilometry coherently phase-demodulates a whole set of N-fringe-pattern perspectives in a single demodulation and unwrapping process. The mathematical theory behind digital co-phasing N-fringe-patterns is mathematically similar to co-phasing a segmented N-mirror telescope.
Highlights
Digital fringe projection 3D profilometry continues to be an active research field as can be seen from the references on this paper [1–9]
The single most important problem in single-camera, single-projection profilometry are the shadows and specular reflections generated by the 3D object under analysis
The single-step co-phased demodulation of N-fringe-patterns taken from N-perspectives minimizes the shadows and specular reflections from the 3D object being digitized
Summary
Digital fringe projection 3D profilometry continues to be an active research field as can be seen from the references on this paper [1–9]. Su et al [5], and Liu et al [6] explore how to integrate N-camera-projector systems which generates N-fringe-patterns from different positions to obtain a single 3D shape measurement. In previous non-coherent integration of N-camera-projector profilometry systems, one must first estimate the fringe-boundaries of the N-digitized fringe-patterns [3,4,5,6,7]. This Ntimes fringe-boundary estimation is followed by N-phase-demodulations, which in turn is followed by N-phase-unwrappings. In this paper we propose to use a single-camera and N-projections directions illuminating the 3D-object These N-fringe-projections minimize the shadows and specular reflecting zones from the 3D-object. After coherently summing N-analytical-signals, just a single unwrapping process is required
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
