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Proceedings Paper

Integrating sphere versus opal glass as the reference for colorimetry of transmission targets for scanner characterization
Author(s): David Q. McDowell
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Paper Abstract

The ANSI IT8.7/1-1993 standard defines the requirements for color film targets, intended for the characterization of color input scanners for graphic arts applications. These targets are created by the film manufacturer, based on their understanding of the capabilities of the specific photographic film product used, and in accordance with the guidelines of the standard. The manufacturer of the target is required to furnish colorimetric data describing the targets, either for individual targets or as batch average data. The standard makes provision for the reporting of the colorimetric parameters based on either integrating sphere- referenced measurements or opal-glass diffuser-referenced measurements. The integrating sphere is the more conventional geometry for colorimetric data while opal-glass is the specified geometry for densitometric data. Many new spectral measurement instruments, that are intended to provide both density and colorimetric data, use an opal- glass diffuser.

Paper Details

Date Published: 4 April 1997
PDF: 7 pages
Proc. SPIE 3018, Color Imaging: Device-Independent Color, Color Hard Copy, and Graphic Arts II, (4 April 1997); doi: 10.1117/12.271590
Show Author Affiliations
David Q. McDowell, Eastman Kodak Co. (United States)

Published in SPIE Proceedings Vol. 3018:
Color Imaging: Device-Independent Color, Color Hard Copy, and Graphic Arts II
Giordano B. Beretta; Reiner Eschbach, Editor(s)

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