SEDL / STP / STP716-EB / STP27510S

Real-Time Optical Processing: Automatized Optical Plotter and Interferometric Device for 3D-Imaging

Landraud, AM
Laboratoire d'Optique, tour 13, Zème étage, Université P. et M. Curie, Paris Cedex,

Clair, JJ
Ecole Nationale Supérieme de l'Electronique et de ser Applications, Cergy-Pontoise, Paris,

Pages: 13    Published: Jan 1980

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Abstract

In this paper we are interested in reconstructing, by optical methods, a three-dimensional spatial distribution of a local parameter such as an attenuation coefficient or small differences in the refractive index of objects which are relatively transparent to electromagnetic energy.

We present a computer-controlled optical tracing system to produce the different-amplitude filters needed for the optical treatment and an interferometric device for scanning phase objects.

A new technique for coding image data allows the reconstruction of 3D-amplitude and phase objects to be performed without long and expensive numerical treatments.