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

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

Research output: Journal article publicationConference articleAcademic researchpeer-review

3 Citations (Scopus)


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 different 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 CIELAB 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 tiles as the calibration data and the testing is based on the Color Curve Paper Samples.
Original languageEnglish
Pages (from-to)789-793
Number of pages5
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1 Dec 2001
Event9th Congress of the International Colour Association - Rochester, NY, United States
Duration: 24 Jun 200129 Jun 2001

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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