engleski

The intensity of the simultaneous contrast effect depending on the change of background lightness

The paper explores the influence of the background effect of induction or simultaneous contrast on a specific type of media during the reproduction of a constructed design solution. The lightness of the background that surrounds the primary stimulus (rectangle) on a specifically constructed design was varied in ten ways. The intensity and direction of variations in the manifestation of lightness was determined with the help of the technique of simultaneous binocular harmonization on a certain number of respondents (10). The ANOVA analysis determined the existence of differences between arithmetic means (F = 132, 50 ; p = 0, 000), and the post-hoc analysis by Fisher classified three groups of samples: samples on which simultaneous contrast reflects more strongly (a very dark background) ; samples on which the effect is weaker (a light background) ; and samples on which the effect is manifested in the opposite direction (a very bright background).

achromatic reproduction ; ANOVA ; psychophysics ; simultaneous contrast

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