Premium
An abridged technique to diagnose spectrophotometric errors
Author(s) -
Berns Roy S.,
Reniff Lisa
Publication year - 1997
Publication title -
color research and application
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 62
eISSN - 1520-6378
pISSN - 0361-2317
DOI - 10.1002/(sici)1520-6378(199702)22:1<51::aid-col8>3.0.co;2-3
Subject(s) - cyan , tile , reproducibility , nist , wavelength , mathematics , algorithm , computer science , optics , statistics , materials science , physics , speech recognition , composite material
The effect on colorimetric accuracy of spectrophotometric errors (±0.5 and ±1% reference white, ±0.25 and ±0.5% reference black, and ±0.5 and ±1 nm wavelength) was simulated for the BCRA Series II tile set by using previously investigated models for these errors. Δ E * 94 color differences of up to 5.2 could result. Because the errors are linearly related to CIELAB differences for each tile, a technique was derived that enabled Δ L * , Δ a * , and Δ b * coordinates between a calibrated tile and its measured value to be transformed into estimates of reference white, reference black, and wavelength error. The cyan tile was identified as the most effective tile for this technique. “Universal” equations are included for 45/Normal and Normal/Total geometries traceable to the National Institute of Standards and Technology (NIST), and Normal/45, Normal/Total, and Normal/Diffuse geometries traceable to the National Physical Laboratory (NPL). Measuring the cyan tile on a regular basis and transforming its colorimetric coordinates into spectrophotometric error metrics provides a useful method to validate the accuracy and reproducibility of a color‐measurement instrument. © 1997 John Wiley & Sons, Inc. Col Res Appl, 22, 51–60, 1997.