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Double three-step phase-shifting algorithm
- Source :
- Applied Optics. 41:4503
- Publication Year :
- 2002
- Publisher :
- The Optical Society, 2002.
-
Abstract
- We describe what we believe is a new phase-shifting algorithm called a double three-step algorithm developed to reduce the measurement error of a three-dimensional shape-measurement system, which is based on digital fringe-projection and phase-shifting techniques. After comparing the performance of different existing phase-shifting algorithms, we present the new double three-step algorithm based on the error analysis of the standard three-step algorithm. In this algorithm, three-step phase shifting is done twice with an initial phase offset of 60 degrees between them, and the two obtained phase maps are averaged to generate the final phase map. Both theoretical and experimental results showed that this new algorithm worked well in significantly reducing the measurement error.
- Subjects :
- Observational error
business.industry
Computer science
Adaptive-additive algorithm
Materials Science (miscellaneous)
Phase shifting algorithm
Phase (waves)
Industrial and Manufacturing Engineering
Interferometry
Speckle pattern
Optics
Business and International Management
Image sensor
business
Subjects
Details
- ISSN :
- 15394522 and 00036935
- Volume :
- 41
- Database :
- OpenAIRE
- Journal :
- Applied Optics
- Accession number :
- edsair.doi.dedup.....56c08f3cc98ea2997078e2db31c3982e