Comprehensive comparison between different mathematical models for inter-instrument agreement of reflectance spectrophotometers

Sidney Y.S. Chung; John H. Xin; K.M. Sin

doi:10.1117/12.464698

6 June 2002 Comprehensive comparison between different mathematical models for inter-instrument agreement of reflectance spectrophotometers

Sidney Y.S. Chung, John H. Xin, K.M. Sin

Author Affiliations +

Proceedings Volume 4421, 9th Congress of the International Colour Association; (2002) https://doi.org/10.1117/12.464698
Event: 9th Congress of the International Color Association, 2001, Rochester, NY, United States

Abstract

In color-related industry, reflectance spectrophotometers are one of the most popular equipment for evaluating the color quality and color difference. Currently, manufacturers claim that the measurement difference between models of spectrophotometer was lower than 0.1 CIELAB ΔE units. But in our investigation, the color difference values range from 0.5 to 0.8 CIE ΔE units, which implies that the correction models must be applied to correct such errors. In our investigation, two models were also developed, so call "Lab Model" and "R-Model". These two models only involve simple regression calculation and the results also showed significant improvement. A comprehensive comparison between those models and the previously reported models is made. The comparison involves the use of BCRA-NPL Series II titles as the calibration data and the testing is based on teh Color Curve Paper Samples.

Citation Download Citation

Sidney Y.S. Chung, John H. Xin, and K.M. Sin "Comprehensive comparison between different mathematical models for inter-instrument agreement of reflectance spectrophotometers", Proc. SPIE 4421, 9th Congress of the International Colour Association, (6 June 2002); https://doi.org/10.1117/12.464698

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