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Proceedings Paper

Design and production of color calibration targets for digital input devices
Author(s): ChaoHua Wen; Jyh-Jiun Lee
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Paper Abstract

This paper presents the design and production of calibration targets for digital input color devices. By experimentally determined gamut of surface color, this study redesigns the aim values based on ISO/FDIS 12641 and to meet process specifications of Noritsu QSS23-HRCRT photographic printer with silver halide photography. The calibration target includes four components: a set of 144 color patches (3 levels in lightness and 4 levels in chroma at 12 different hue angles) within printing gamut, a neutral scale containing 22 steps based on visual perception, a set of C- M-Y-K-R-G-B dye scales showing characteristics of photographic materials, and a series of facial colors ranked by red. This research will describe the meaning of each element, the use of colorimetric mapping to CIELCH for each element, the conversion of these patch into a RGB-mode electronic image file, and how to control the processing of color photographic materials. And we proposed an approach of dynamic subgroup linear interpolation to achieve high process quality of manufacturing calibration targets and cost-down. Finally, statistic results revealed that 99% of the patches are within 10 delta Eab of the aim values specified in this study from long-term test and 99% of the patches in the manufacturing batch are within 5 delta Eab of the mean values from short-term test.

Paper Details

Date Published: 28 June 2000
PDF: 11 pages
Proc. SPIE 4080, Input/Output and Imaging Technolgies II, (28 June 2000); doi: 10.1117/12.389438
Show Author Affiliations
ChaoHua Wen, Industrial Technology Research Institute (Taiwan)
Jyh-Jiun Lee, Industrial Technology Research Institute (Taiwan)

Published in SPIE Proceedings Vol. 4080:
Input/Output and Imaging Technolgies II
Yung-Sheng Liu; Thomas S. Huang, Editor(s)

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