Journal ArticleDOI
Fringe projection technique for the 3-D shape measurement of a hydroformed shell
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TLDR
In this article, a non-contact optical method based on the fringe projection technique was proposed for 3D shape measurement of a hydroformed shell by a CCD camera and a Fourier transform is performed on the image using a microcomputer.About:
This article is published in Journal of Materials Processing Technology.The article was published on 1999-05-19. It has received 18 citations till now. The article focuses on the topics: Structured-light 3D scanner & Moiré pattern.read more
Citations
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Journal Article
Fourier-transform method of fringe-pattern analysis for computer-based topography and interferometry
TL;DR: In this article, a fast Fourier transform method of topography and interferometry is proposed to discriminate between elevation and depression of the object or wave-front form, which has not been possible by the fringe-contour generation techniques.
Journal ArticleDOI
An automatic evaluation method for the surface profile of a microlens array using an optical interferometric microscope
TL;DR: In this article, an automatic evaluation method for the surface profile of a microlens array using an optical interferometric microscope is presented, where an XY-table is used to position it.
Journal ArticleDOI
3D surface profile measurement of unsymmetrical microstructure using Fizeau interferometric microscope
TL;DR: In this article, an automatic optical inspection system for the 3D surface profile of an unsymmetrical microstructure using Fizeau interferometer was proposed This non-contact inspection system is suitable for measuring the lens sag and 3D surfaces profile of symmetrical and un symmetrical microlenses, and fitting these discrete points as close curves through the Bezier curve theory.
Journal ArticleDOI
Optical edge projection for surface contouring
TL;DR: In this article, a novel optical edge projection method is proposed for surface contouring of an object with low reflectivity, where a structured light edge is projected onto a dark surface, and the image is captured by a CCD camera.
Journal ArticleDOI
Measurement of PCI connector tilts using phase-shift fringe projection
V. Retnasamy,Mani Maran Ratnam +1 more
TL;DR: In this paper, the tilt angles of peripheral component interconnect (PCI) connectors on a printed circuit board assembly (PCBA) were measured using the phase-shift fringe projection method.
References
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Journal Article
Fourier-transform method of fringe-pattern analysis for computer-based topography and interferometry
TL;DR: In this article, a fast Fourier transform method of topography and interferometry is proposed to discriminate between elevation and depression of the object or wave-front form, which has not been possible by the fringe-contour generation techniques.
Journal ArticleDOI
Fourier-transform method of fringe-pattern analysis for computer-based topography and interferometry
TL;DR: In this paper, a fast Fourier transform method of topography and interferometry is proposed to discriminate between elevation and depression of the object or wave-front form, which has not been possible by the fringe-contour generation techniques.
Journal ArticleDOI
Fourier transform profilometry for the automatic measurement of 3-D object shapes
Mitsuo Takeda,Kazuhiro Mutoh +1 more
TL;DR: A new computer-based technique for automatic 3-D shape measurement is proposed and verified by experiments that has a much higher sensitivity than the conventional moire technique and is capable of fully automatic distinction between a depression and an elevation on the object surface.
Journal ArticleDOI
Automated phase-measuring profilometry of 3-D diffuse objects
TL;DR: The high resolution surface profile of a 3-D diffuse object is obtained by measurement of the phase distribution across the image of a projected sinusoidal grating deformed by the surface, based on phase-shifting interferometric techniques.
Journal ArticleDOI
Two-dimensional fringe-pattern analysis.
TL;DR: Two-dimensional sinusoid fitting and Fourier transform methods of analyzing fringes to determine the wave-front topography are described and are accurate.
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