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Proceedings Paper

Optical scattering measurement instrument for the design of machine vision illumination
Author(s): Jari Miettinen; Ari K. Harkonen; Timo H. Piironen
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Paper Abstract

In this report we describe an optical scattering measurement instrument developed for the design of machine vision illumination. The instrument can measure the radiance of surfaces as a function of the illumination and viewing angles and it can be used to measure relative bidirectional reflectance (BRDF) characteristics of materials. The constructions used were the traditional mechanically scanned single detector based solution and a new video camera based solution. The benefits of the video camera based solution are the rapid measurement of a large scattering angle range and the possibility of viewing scattering patterns on a monitor in real time. The experimental results of the BRDF measurements on copper and galvanized steel are modeled by using reflectance models based on geometrical optics and wave theory.

Paper Details

Date Published: 1 March 1992
PDF: 12 pages
Proc. SPIE 1614, Optics, Illumination, and Image Sensing for Machine Vision VI, (1 March 1992); doi: 10.1117/12.57968
Show Author Affiliations
Jari Miettinen, Technical Research Ctr. of Finland (Finland)
Ari K. Harkonen, Technical Research Ctr. of Finland (Finland)
Timo H. Piironen, Rautaruukki Oy New Technology (Finland)

Published in SPIE Proceedings Vol. 1614:
Optics, Illumination, and Image Sensing for Machine Vision VI
Donald J. Svetkoff, Editor(s)

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