Naslov
Range Definition of Acceptable Differences of Chromatic Value by Color Measurement and Visual Estimation

Autori
Knešaurek, Nina

Izvornik
Croatica Chemica Acta (0011-1643) 70 (1997), 4; 955-969

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
CIELAB; colorimetry; colour tolerance; hue

Sažetak
Under the defined conditions, 24 samples, considered to be similar to the chosen standards in their chromatic characteristics, were chosen by the visual method among 126 similar samples. The standard and all the tested (investigated)samples were measured on the spectral photometer. The measured reflectancies were recalculated into numerical values of CIELAB. Based on the data obtained by the instrumental method, the developed differences of 24 visually similar samples were calculated and analyzed. The limits of the visual judgement expressed as dL, dH, dC were numerical defined. The developed color differences are usually defined by one numerical data, i.e., dE. Based on their analysis of the calculated chromatic values of CIELAB and their chromatic influences in the visual estimation of the change of the expression of dE, it is suggested to use three numerical values, dL, dH, dC, to define color differences. In this way, the values that caused the developed differences can be defined.

Izvorni jezik
Engleski

Znanstvena područja
Grafička tehnologija

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