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                            Library & Multimedia
 Motion Induced Phase Error Reduction Using a Filbert Transform
NCJ Number
              254091
Journal

*Optics Express* Volume: 26 Issue: 26 Dated: 2018 Pages: 34224-34235
Author(s)
          Y Wang;
                        Z. Liu;
                        C. Jiang;
                        S. Zhang
Date Published

2018
Length
              12 pages
Annotation
              Since object motion can introduce phase error and thus measurement error for phase-shifting profilometry, this article reports on a project that proposes a generic motion error compensation method, based on the authors' finding that the dominant motion-introduced phase error doubles the frequency of the projected fringe frequency, and the Hilbert transform shifts the phase of a fringe pattern by n/2.
Abstract
              A Hilbert transform was applied to phase-shifted fringe patterns to generate another set of fringe patterns, calculating one phase map using the original fringe patterns and another phase map using Hilbert transformed fringe patterns. The average of these two phase maps was then used for three-dimensional reconstruction. Both simulation and experiments demonstrated that the proposed method can substantially reduce motion-introduced measurement error. (publisher abstract modified)
      
  
          Additional Details
Grant Number(s)
        2016-DN-BX-0189


  
  
        
  Agencies
        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)
                                Report (Study/Research)
                                Report (Grant Sponsored)
                                Program/Project Description


  
  
        
  Award
        Development of a Portable 3D Imaging System for Capturing Shoe and Tire Impressions
    
  
  
Date Published: January 1, 2018
    
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