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Proceedings Paper

Multispectral image capture using a tunable filter
Author(s): Jon Yngve Hardeberg; Francis J. M. Schmitt; Hans Brettel
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Paper Abstract

In this article we describe the experimental setup of a multispectral image acquisition system consisting of a professional monochrome CCD camera and a tunable filter in which the spectral transmittance can be controlled electronically. We have performed a spectral characterization of the acquisition system taking into account the acquisition noise. To convert the camera output signals to device-independent data, two main approaches are proposed and evaluated. One consists in applying regression methods to convert from the K camera outputs to a device- independent color space such as CIEXYZ or CIELAB. Another method is based on a spectral model of the acquisition system. By inverting the model using a Principal Eigenvector approach, we estimate the spectral reflectance of each pixel of the imaged surface.

Paper Details

Date Published: 21 December 1999
PDF: 12 pages
Proc. SPIE 3963, Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts V, (21 December 1999); doi: 10.1117/12.373441
Show Author Affiliations
Jon Yngve Hardeberg, Ecole Nationale Superieure des Telecommunications (Norway)
Francis J. M. Schmitt, Ecole Nationale Superieure des Telecommunications (France)
Hans Brettel, Ecole Nationale Superieure des Telecommunications (France)


Published in SPIE Proceedings Vol. 3963:
Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts V
Reiner Eschbach; Gabriel G. Marcu, Editor(s)

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