title: Real-time, high-accuracy 3D imaging and shape measurement.
abstract: In spite of the recent advances in 3D shape measurement and geometry reconstruction, simultaneously achieving fast-speed and high-accuracy performance remains a big challenge in practice. In this paper, a 3D imaging and shape measurement system is presented to tackle such a challenge. The fringe-projection-profilometry-based system employs a number of advanced approaches, such as: composition of phase-shifted fringe patterns, externally triggered synchronization of system components, generalized system setup, ultrafast phase-unwrapping algorithm, flexible system calibration method, robust gamma correction scheme, multithread computation and processing, and graphics-processing-unit-based image display. Experiments have shown that the proposed system can acquire and display high-quality 3D reconstructed images and/or video stream at a speed of 45 frames per second with relative accuracy of 0.04% or at a reduced speed of 22.5 frames per second with enhanced accuracy of 0.01%. The 3D imaging and shape measurement system shows great promise of satisfying the ever-increasing demands of scientific and engineering applications.
authors.forename: Hieu
authors.initials: H
authors.lastname: Nguyen
authors.forename: Dung
authors.initials: D
authors.lastname: Nguyen
authors.forename: Zhaoyang
authors.initials: Z
authors.lastname: Wang
authors.forename: Hien
authors.initials: H
authors.lastname: Kieu
authors.forename: Minh
authors.initials: M
authors.lastname: Le