Results 161 to 170 of about 29,048 (184)

Optical micro-profilometry for archaeology

SPIE Proceedings, 2005
A quantitative morphological analysis of archaeological objects represents an important element for historical evaluations, artistic studies and conservation projects. At present, a variety of contact instruments for high-resolution surface survey is available on the market, but because of their invasivity they are not well received in the field of ...
Carcagnì P, Daffara C, Fontana R, Gambino MC, Mastroianni M, Mazzotta C, Pampaloni E, Pezzati L   +7 more
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Two-dimensional phase-measuring profilometry

Applied Optics, 2005
An improved method is proposed to perform contouring of an object based on phase-measuring profilometry with a grid grating. Two phases unwrapped in perpendicular directions are obtained with the help of an adaptive bandpass filter and are used to unwrap the phases and to appoint the edge points of a shaded area and the object area.
Rui-Hua, Zheng, Yu-Xiao, Wang, Xue-Ru, Zhang, Ying-Lin, Song   +3 more
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Circular fringe projection profilometry: erratum

Optics Letters, 2017
In this erratum, an error in Eq. (14) in our recently published Letter [Opt. Lett.41, 4951 (2016)10.1364/OL.41.004951OPLEDP0146-9592] is corrected.
Hong, Zhao, Chunwei, Zhang, Changquan, Zhou, Kejian, Jiang, Meiqi, Fang   +4 more
openaire   +2 more sources

Micro-profilometry

2009
Brief description of optical microprofilometry for 3D analysis of paintings: method, instrumentation, essential bibliography.
Daffara, Claudia, R. Fontana, M. C. Gambino   +2 more
openaire   +1 more source

Urethral pressure profilometry in mares

Journal of the American Veterinary Medical Association, 1987
Summary A technique was developed for recording urethral pressure profiles (upp) in mares. Profiles were obtained from 12 clinically normal mares and from 3 mares with urinary incontinence. Variables measured on the profile included intravesicular pressure and maximal urethral closure pressure.
A D, Kay, J P, Lavoie
openaire   +2 more sources

Optical reference profilometry

Optical Engineering, 2001
The optical reference profilometer is a coordinate measurement machine (CMM) configuration that utilizes a special optical referencing frame to provide a stable and accurate surface measurement. This referencing frame provides several mechanical advantages that make it possible to use lower precision mechanical components while still maintaining high ...
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Optical Profilometry of Nail Dystrophies

Dermatology, 1995
Optical profilometry after nail shadowing is introduced as a new technique to quantify nail surface alterations. Objective evaluations can be performed in vivo as well as on nail clippings and silicone rubber replicas. Trachyonychia, pittings, grooves and any other type of onychodystrophy are conveniently defined by 3 profilometric parameters: the mean
N, Nikkels-Tassoudji, C, Piérard-Franchimont, P, De Doncker, G E, Piérard   +3 more
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Adaptive Profilometry for Industrial Applications

1993
In this chapter a review of optical profilometry techniques is presented. Particular emphasis is given to industrial applications of these methods, especially their system adaptiveness. The main features of an optical adaptive profilometer, which makes use of a Liquid Crystal projector, are presented.
SANSONI, Giovanna, DOCCHIO, Franco, MINONI, Umberto, BIANCARDI, Luca   +3 more
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Comparing Hilbert transform profilometry and Fourier transform profilometry (Conference Presentation)

Dimensional Optical Metrology and Inspection for Practical Applications VIII, 2019
Three-dimensional (3D) shape measurement methods based on fringe analysis could achieve high resolution and high accuracy. Fourier transform profilometry (FTP) uses a single fringe pattern is sufficient to recover the carrier phase for 3D shape measurement. Basically, FTP method applies Fourier transform to a fringe image and extracts the desired phase
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Relocation profilometry

Journal of Physics E: Scientific Instruments, 1968
J B P Williamson, R T Hunt
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