ACCURACY OF COLOUR PRODUCTION ON A CRT DISPLAY AS A FUNCTION OF THE MEASUREMENT INSTRUMENT USED FOR CALIBRATION

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Authors
  1. Kaufmann, R.
  2. McFadden, S.M.
  3. Wong, M.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
The investigation determined the error associated with colour reproduction when different light meters were used to characterize a CRT. Luminance measurements were taken with three light-measuring instruments to produce gamma tables. The tables were used to calibrate 28 colors. Results showed that the most acceptable instrument was one that accurately measured light below 0.00 cd/m square and the used colour-matching tables to weight the radiant energy. Less-sensitive instruments that used fixed filters to model the colour-matching functions produced colours that were perceptibly different from the specified colours. The reproduction errors were evaluated against colour discrimination thresholds and delta E. If accurate reproduction of luminance is not essential, a less-sensitive instrument with a cutoff of 0.01 cd/m square and three separate filters for modeling the colour-matching functions may be adequate. Complete gamma-correction tables (voltage input/luminance output) for each gun were not necessary. Accurate colour calibration can be based on a limited number of luminance measurements plus an interpolation procedures to determine the intervening values in the gamma tables. The reliability of the initial characterization was tested after an interval of 9 months. The maximum luminance of the monitor decreased considerably over this time period. TRUNCATED
Report Number
DCIEM-92-52 — Reprint
Date of publication
01 Sep 1992
Number of Pages
10
Reprinted from
J of the Society for Information Display, vol 1, no 4, 1993, p 387-395
DSTKIM No
94-06120
CANDIS No
143223
Format(s):
Hardcopy;Document Image stored on Optical Disk

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