Shape measurement using phase-shifting speckle interferometry

1992 ◽  
Author(s):  
Ad A. M. Maas
Keyword(s):  
Speckle Interferometry ◽  
Phase Shifting ◽  
Shape Measurement

Two-wavelength method for endoscopic shape measurement by spatial phase-shifting speckle-interferometry

2004 ◽  
Vol 43 (29) ◽  
pp. 5429 ◽  
Author(s):  
Jochen Kandulla ◽  
Björn Kemper ◽  
Sabine Knoche ◽  
Gert von Bally
Keyword(s):  
Speckle Interferometry ◽  
Phase Shifting ◽  
Shape Measurement ◽  
Spatial Phase

Multi-STFT for adaptive SCPS phase determination

2009 ◽  
Vol 17 (4) ◽  
Author(s):  
R. Sitnik
Keyword(s):  
Fourier Transform ◽  
Carrier Phase ◽  
Fringe Pattern ◽  
Phase Shifting ◽  
Shape Measurement ◽  
Step Method ◽  
Phase Determination ◽  
3D Shape Measurement ◽  
Phase Calculation ◽  
Carrier Phase Shifting

AbstractThis paper presents a fast and reliable approach for phase modulo 2π-calculation from a single fringe pattern. It calculates correct phase values even for very complex and variable shape gradients based on a locally variable fringe period determined for the entire image. In the paper, a new two-step method for wrapped phase calculation is proposed. It is performed through the use of a method based on a multiple local fast Fourier transform for estimation of a local fringes period map and a 5-point spatial carrier phase shifting (SCPS) formula for phase modulo 2π-calculation. The described approach is verified by a correct demodulation of a real fringe pattern taken by a 3D-shape measurement system.

scholarly journals Superfast phase-shifting method for 3-D shape measurement

2010 ◽  
Vol 18 (9) ◽  
pp. 9684 ◽  
Author(s):  
Song Zhang ◽  
Daniel Van Der Weide ◽  
James Oliver
Keyword(s):  
Phase Shifting ◽  
Shape Measurement ◽  
Phase Shifting Method

Two-step triangular phase-shifting method for 3-D object-shape measurement

2005 ◽  
Author(s):  
Peirong Jia ◽  
Jonathan Kofman ◽  
Chad English ◽  
Adam Deslauriers
Keyword(s):  
Phase Shifting ◽  
Shape Measurement ◽  
Object Shape ◽  
Phase Shifting Method
Sign in / Sign up

Export Citation Format

Share Document