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Proceedings Paper

Input calibration for negative originals
Author(s): Chris Tuijn
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Paper Abstract

One of the major challenges in the prepress environment consists of controlling the electronic color reproduction process such that a perfect match of any original can be realized. Whether this goal can be reached depends on many factors such as the dynamic range of the input device (scanner, camera), the color gamut of the output device (dye sublimation printer, ink-jet printer, offset), the color management software etc. The characterization of the color behavior of the peripheral devices is therefore very important. Photographs and positive transparents reflect the original scene pretty well; for negative originals, however, there is no obvious link to either the original scene or a particular print of the negative under consideration. In this paper, we establish a method to scan negatives and to convert the scanned data to a calibrated RGB space, which is known colorimetrically. This method is based on the reconstruction of the original exposure conditions (i.e., original scene) which generated the negative. Since the characteristics of negative film are quite diverse, a special calibration is required for each combination of scanner and film type.

Paper Details

Date Published: 10 April 1995
PDF: 8 pages
Proc. SPIE 2414, Device-Independent Color Imaging II, (10 April 1995); doi: 10.1117/12.206555
Show Author Affiliations
Chris Tuijn, Agfa-Gevaert NV (Belgium)


Published in SPIE Proceedings Vol. 2414:
Device-Independent Color Imaging II
Eric Walowit, Editor(s)

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