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Volume: 16 | Article ID: art00060_2
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Measuring the Transmittance of Transparency Print using a Reflectance Measurement Instrument
Chengwu Cui
  DOI :  10.2352/ISSN.2169-4451.2000.16.1.art00060_2  Published Online :  January 2000
Abstract

This paper describes a method to derive spectral transmittance data from spectral reflectance measurement data. The model was verified with colors of the IT8.7/3 color charts. The spectral reflectance of printed colors was measured with an automated reflectance measurement system by placing the transparency sheet on the measurement table with paper backing. The spectral transmittance of these color patches was also measured manually for comparison. The combined transparency and backing reflectance data were used to derive the transmittance data based on a special model. The CIELAB color differences between the model-derived transmittance data and the actual measured transmittance data were computed. The average, maximum and standard deviation of CIELAB color differences between the model-derived data and the actual transmittance data for the 928 colors were found to be 1.6, 8.7 and 1.21, respectively. There were generally larger deviations for darker colors due to lower signal noise ratios.

Journal Title : NIP & Digital Fabrication Conference
Publisher Name : Society of Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151, USA
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 DOI 10.2352/ISSN.2169-4451.2000.16.1.art00060_2
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  Cite this article 

Chengwu Cui, "Measuring the Transmittance of Transparency Print using a Reflectance Measurement Instrument"  in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP16),  2000,  pp 657 - 660,  https://doi.org/10.2352/ISSN.2169-4451.2000.16.1.art00060_2

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Copyright © Society for Imaging Science and Technology 2000
72010410
NIP & Digital Fabrication Conference
nip digi fabric conf
2169-4451
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA
2169-4451(20000101)2000:2L.657;1-
nip_v2000n2/splitsection60.xml
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Articles
Measuring the Transmittance of Transparency Print using a Reflectance Measurement Instrument
CuiChengwu
01012000
2000
2
657
660
2000
This paper describes a method to derive spectral transmittance data from spectral reflectance measurement data. The model was verified with colors of the IT8.7/3 color charts. The spectral reflectance of printed colors was measured with an automated reflectance measurement system by placing the transparency sheet on the measurement table with paper backing. The spectral transmittance of these color patches was also measured manually for comparison. The combined transparency and backing reflectance data were used to derive the transmittance data based on a special model. The CIELAB color differences between the model-derived transmittance data and the actual measured transmittance data were computed. The average, maximum and standard deviation of CIELAB color differences between the model-derived data and the actual transmittance data for the 928 colors were found to be 1.6, 8.7 and 1.21, respectively. There were generally larger deviations for darker colors due to lower signal noise ratios.