Naslov
Sources of Noise in Gray Component Replacement

Autori
Donevski, Davor ; Milčić, Diana ; Mahović Poljaček, Sanja ; Cigula, Tomislav

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
IJCELIT 2015 Proceedings / Borberly, A. - Budimpešta : Faculty of light industry and environmental engineering, 2015, 92-97

ISBN
978-615-5460-60-9

Skup
International Joint Conference on Environmental and Light Industry Technologies

Mjesto i datum
Budimpešta, Mađarska, 19.11.2015. - 20.11.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
gray component replacement; noise; artefacts

Sažetak
Gray component replacement (GCR) is a useful technique of replacing the gray component in a mixture of chromatic inks (CMY) by a corresponding amount of black ink (K). As it reduces ink consumption, many methods and commercial solutions have been developed. This paper focuses on issues encountered in the process of developing a GCR method. While some printing processes are modelled easily and GCR can be applied with high accuracy, some processes turn out to be quite problematic. In such cases, although colorimetric accuracy may be met, GCR introduces noise into images. While many papers describe methods of circumventing the introduction of noise when applying GCR, there exist no analyses of why it appears only in some cases. This paper provides example of a printing process in which noise appears. The sources of noise are identified and solutions are recommended. It was found that with proper color space sampling the GCR model used in experiment provides noiseless solutions.

Izvorni jezik
Engleski

Znanstvena područja
Grafička tehnologija

POVEZANOST RADA