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Proceedings Paper

Color measurements of nonhomogeneous colored flat surfaces using a PC-based color camera vision system
Author(s): Franz A. Pertl; Robert P. M. Craven; James E. Smith; Curtis Duhn
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Paper Abstract

This paper presents a test of a vision system's capability to measure consistently the color of blotches and other distinctly colored regions on a flat surface. The system consists of an off-the-shelf color camera, a color-corrected halogen illumination source, and a personal computer equipped with a frame grabber. Correction algorithms to compensate for spatial variations in illumination and sensitivity differences between pixels and the RGB channels are employed along with a calibration procedure to assure consistent measurements of the differently colored regions over a number of samples. A custom conversion of RGB to XYZ color space based on a linear-least squares fit within a certain portion of the color space was also explored to determine its suitability.

Paper Details

Date Published: 18 September 1997
PDF: 9 pages
Proc. SPIE 3205, Machine Vision Applications, Architectures, and Systems Integration VI, (18 September 1997); doi: 10.1117/12.285580
Show Author Affiliations
Franz A. Pertl, West Virginia Univ. (United States)
Robert P. M. Craven, West Virginia Univ. (United States)
James E. Smith, West Virginia Univ. (United States)
Curtis Duhn, Integral Vision Systems, Inc. (United States)

Published in SPIE Proceedings Vol. 3205:
Machine Vision Applications, Architectures, and Systems Integration VI
Susan Snell Solomon; Bruce G. Batchelor; John W. V. Miller, Editor(s)

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