title: Superfast phase-shifting method for 3-D shape measurement.
abstract: Recently introduced DLP Discovery technology allows for tens of kHz binary image switching, which has great potential for superfast 3-D shape measurement. This paper presents a system that realizes 3-D shape measurement by using a DLP Discovery technology to switch binary structured patterns at very high frame rates. The sinusoidal fringe patterns are generated by properly defocusing the projector. Combining this approach with a phase-shifting method, we achieve an unprecedented rate for 3-D shape measurement: 667 Hz. This technology can be applied to numerous applications including medical science, biometrics, and entertainment.
authors.affiliation: Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA. song@iastate.edu
authors.forename: Song
authors.initials: S
authors.lastname: Zhang
authors.forename: Daniel
authors.initials: D
authors.lastname: Van Der Weide
authors.forename: James
authors.initials: J
authors.lastname: Oliver