Study on the Phase Unwrapping Method with Colored Encoded Grating Pattern in 3-Dimension Profile Measurement

Bing Li; Zhuang De Jiang; Xiao Qin Wang

doi:10.4028/www.scientific.net/KEM.381-382.275

Paper Titles

Characterizing the Thermal Properties of Solid Materials with Weakly Absorption by the Transient Thermal Grating Method
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Aspheric Surface Testing Using a Partial Compensation Lens
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New Approach to Fringe Pattern Analysis Obtained by Scanning Polished Metal Cylinders with Gaussian Beam
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Theoretical Study on Self-Calibration for the Wide-Range Laser Auto-Collimation Method
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Study on the Phase Unwrapping Method with Colored Encoded Grating Pattern in 3-Dimension Profile Measurement
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A Study of the Surface Profile Measurement Using a Reference Error Free Interferometer
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3D Displacement Measurement with Pico-Meter Resolution Using Single Heterodyne Grating Interferometry
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Merging Phase Shifting Interferometry with Confocal Chromatic Microscopy
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Positional Detection in Grating Mosaic Based on Image Processing of Far-Field Diffraction Intensity Patterns in Two Wavelengths
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 381-382Study on the Phase Unwrapping Method with Colored...

Study on the Phase Unwrapping Method with Colored Encoded Grating Pattern in 3-Dimension Profile Measurement

Abstract:

The phase-shifting method is widely used in 3-D profile measurement with optoelectronic technology and phase unwrapping is an important link where in. The traditional methods are too complex and have low efficiency. A novel method of evaluating absolute phase is presented in this paper. The technique combined the grey code fringe with phase shifting technique and colored encoded grating pattern. The order of the projecting fringes ) , ( y x n can be obtained from only one distortional colored image. The procedure is relatively simple in experimental setup and algorithm. In addition, the speed of measurement is faster than current phase unwrapping algorithm. The experimental results have proved the validity of this method.

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Periodical:

Key Engineering Materials (Volumes 381-382)

Pages:

275-278

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.381-382.275

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Online since:

June 2008

Authors:

Bing Li, Zhuang De Jiang, Xiao Qin Wang

Keywords:

3D Profile Measurement, Colored Encoded Grating, Phase Shifting, Phase Unwrapping

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References

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