EOPTIS SRL
Via Alto Adige, 152 38121 Trento (TN) ITALY
Tel.: +39 0461 260 552 Fax: +39 0461 260 617
www.eoptis.com info@eoptis.com
Page 14 of 29
CLM-194
Rev. 1.05 - 06/2014
Copyright © 2013-2014 EOPTIS SRL
5.3 COLOUR DIFFERENCE CHECK
The Colour Difference Check function performs a fast check of the colour difference between the
Measure and the Reference colours, a group of Reference colours or the entire Reference database,
providing a quantification of the CIE 1976 a,b colour difference (CIELAB) E*
ab
. Measure is ranked
according to three threshold levels set by user, allowing to definition of acceptance or rejection
criteria based on objective elements. The result can be used for the quality control of a product, to
evaluate the colour aging of an object and for many other applications.
Colour Difference Check interface
Colour Difference Check mode selector
Measure colour display area
Reference colour display area
CIELAB E*
ab
colour difference between Measure and Reference
CIELAB L* lightness difference, CIELAB C*
ab
chroma difference, a* and b* components difference
between Measure and Reference
Acceptance Thresholds values for E*
ab
colour difference
Visual representation of the E*
ab
colour difference compared to the Acceptance Thresholds
Acceptance threshold validation result
Acceptance class (rank) of the current Measure
Plot of the current Measure in the L*a*b* colour space with Reference set at the origin of axes.
To Next Page
Loading...