Topometry of technical and biological objects by fringe projection
1995; Optica Publishing Group; Volume: 34; Issue: 19 Linguagem: Inglês
10.1364/ao.34.003644
ISSN0003-6935
AutoresRobert Windecker, Hans J. Tiziani,
Tópico(s)Advanced X-ray Imaging Techniques
ResumoFringe projection is a fast and accurate technique for obtaining the topometry of a wide range of surfaces. Here some features of the principle are described, together with the possibilities of adapting this technique for the measurement of vaulted surfaces. We discuss various methods of phase evaluation and compare them with simulated computer data to obtain the resolution limits. Under certain restrictions a semispatial algorithm, called the modified Fourier analysis algorithm, gives the best results. One special subject of interest is the application of fringe projection for the measurement of the three-dimensional surface of the cornea. First results of in vivo measurements are presented.
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