Perceived Differences of Lightness Deviation during the Appearance of Simultaneous Contrast Effect in Printing Process

Martina Hajdek ,Krunoslav Hajdek ,Ivan Budimir

doi:10.17559/tv-20190223163014

Martina Hajdek , Krunoslav Hajdek + Show 1 more

Open Access

https://doi.org/10.17559/tv-20190223163014

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Abstract

Perceived Differences of Lightness Deviation during the Appearance of Simultaneous Contrast Effect in Printing Process

Highlights

The simultaneous contrast effect, which is better known as the induction effect, is one of the three background psychophysical visual effects
This paper shows the research data of psychophysical visual effect of simultaneous contrast when changing RTV of background lightness in the printing process
Any background psychophysical visual effect is in its essence an undesirable effect due to the fact that it changes the perception of the observed color/lightness of the observer, which results in a distorted perception of the quantitative and qualitative attributes of the color/lightness on the observed image

Summary

INTRODUCTION

The simultaneous contrast effect, which is better known as the induction effect, is one of the three background psychophysical visual effects. Vladusich explores the psychophysical data that question the assumption embedded in many models of achromatic color perceptions - that achromatic colors are represented as points in a one-dimensional (1D) perceptual space or the absolute color spectrum, and he presents an alternative model in which the achromatic spectrum of colors that corresponds to the target area is relatively determined considering the surrounding light He proposed a new model of geometric approach to simultaneous contrast and achromatic color matching in terms of the vector sum of local lightness and contrast. The authors Zavagno et al research the role of physical lighting in the perception of lightness in simultaneous contrast [20] The occurrence of this effect has recently been explored in virtual reality, which is why in certain works there are two interpretations by means of systematically manipulating the viewing distance and the horizontal distance between the backgrounds of both the articulated and plain SLC display [21]. In this paper, we will examine and present the intensity of the simultaneous contrast effect in relation to a reproduction made in the offset printing technique according to the CIP3 values and a reproduction made in the same printing technique by means of the tuning method [27, 28], and which the respondents will have the task to make in a way that the primary stimuli on their reproduction are perceived the same as the primary stimuli on reproduction that is made with the help of CIP3

EXPERIMENTAL PART

RESULTS

OF RESULTS

Descriptive Statistics of Lightness Differences

Background

CONCLUSION