Vpliv velikosti opazovane površine na vrednotenje barve in barvnih razlik

Istenič, Neža (author), Bračko, Sabina (mentor)

Zaznavanje barve je rezultat delovanja več dejavnikov. Predpisi, ki jih je vpeljala mednarodna komisija za razsvetljavo (CIE), nam pomagajo razumeti, kako vpliv zunanjih dejavnikov interpretira naš vizualni organ. Numerične lastnosti barve so odvisne tako od velikosti površine opazovanega vzorca kot tudi od lastnosti in nastavitev uporabljene strojne opreme. V diplomskem delu je potekala raziskava o tem, kako omenjena dejavnika vplivata na vrednotenje barve in barvnih razlik. Namen raziskave je bil ugotoviti, kolikšne barve razlike se pojavljajo v absolutnem smislu ob uporabi različno velikih merilnih odprtin ter do kakšnih rezultatov barvnih razlik med dvema vzorcema prihaja ob uporabi različno velikih odprtin in kolikšna so odstopanja rezultatov pri različnih barvnih tonih. Diplomsko delo je sestavljeno iz teoretičnega dela, v katerem so bile povzete pretekle raziskave na področju barvne metrike in raziskovalnega dela, kjer so bile naše domneve obravnavane s pomočjo meritev vzorcev ter računanjem numeričnih lastnosti opazovanih vzorcev. Prvi del raziskave je razkril, do kakšnih barvnih razlik prihaja pri meritvi istega vzorca ob uporabi različno velikih merilnih odprtin. V drugem delu raziskave pa sta bila merjena dva različna vzorca z različno velikimi merilnimi odprtinami, ki sta bila namenjena izračunu barvnih razlik in njihovega odstopanja ob uporabi različnih merilnih odprtin. Računska analiza eksperimentalnega dela je v obeh delih pokazala minimalne razlike v rezultatih, pridobljenih z različnima merilnima odprtinama. Dobljene vrednosti barvnih razlik so pokazale, da človeško oko teh razlik zelo verjetno ne bi zaznalo. Diplomsko delo je potrdilo ugotovitve predhodnih raziskav; predstavlja zanimivo iztočnico za raziskave, pri kateri bi ključno vlogo igrali bolj ekstremni pogoji opazovanja v smislu uporabe nastavitev in komponent strojne opreme.

• Language: Slovenian
• Keywords: spektrofotometer, PANTONE, merjenje barve, barvne razlike, velikost površine
• Work type: Bachelor thesis/paper
• Organization: NTF - Faculty of Natural Sciences and Engineering
• Year: 2021
• PID: 20.500.12556/RUL-130115
• Publication date in RUL: 10.09.2021

Secondary language

• Language: English
• Title: The impact of the size of the observed surface on the evaluation of color and color differences

Abstract

Color perception is the result of the action of major factors. Regulations implemented by the International Commission on Lighting (CIE) help us understand how external factors affect the interpretation of our visual organs. Numerical properties of colors depend on the size of the surfaces of the observed sample, as well as the properties in the settings of the machinery used. The bachelor’s thesis researches how these factors affect the evaluation of colors and color differences. The purpose of the study was to determine how large color differences occur in absolute terms when using different large apertures and what results of color differences between two samples occur using different apertures in what are the deviations of results in different color tones. The thesis consists of a theoretical part in which the past research in the field of color metrics was summarized and of the practical part where our assumptions were researched by measuring samples and calculating the numerical properties of the observed samples. The first part of the research revealed what color differences occur when measuring the same sample using different large measuring openings. In the second part of the research, two different samples were measured with different sizes of apertures which were used to calculate the color differences and their percentage using different sizes of apertures. The numerical analysis of the experimental part in both parts showed minimal differences in the results obtained with different sizes of apertures. The obtained values of color differences showed that the human eye would very likely not detect these differences. The thesis is confirmed in the previous research and represents an interesting starting point for research in which more extreme protection conditions would play a key role in terms of the use of settings in hardware components.

• Keywords: spectrophotometer, PANTONE, color measurement, color differences, surface size