Chroma variations and perceived quality of color images of natural scenes

Abstract

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Effects of display properties on perceived color‐gamut volume and preference

“…Overall, a methodology for the determination of perceived color-gamut volume and scaling of observer preference as a function of perceived gamut volume was established in the context of previous work in this area by Fedorovskaya et al 6 The methodology was refined and validated over a series of two experiments that measured color appearance and preference as a function of color-gamut volume in terms of psychophysical and appearance metrics. In Experiment I, the results of two different laboratories demonstrated that the effect of the perception of colorfulness is relatively strong compared with other color appearance attributes in images where the volume of display color gamut is varied.…”

“…[3][4][5] Hence, a display with a wide color gamut is an advantage in consumer markets. Although Fedorovskaya et al 6 and Shimada et al 7 investigated the color appearance and image quality when varying the chroma of images or color gamut of a display, their investigations do not correspond to the extended gamut and large-screen displays of today. The current studies of Laird and Heynderickx 8 and Hisatake et al 9 also indicate that the preferred gamut or optimal limit of chromaticities were smaller than that of the wide-gamut display from observers' preferred saturation in natural images.…”

41.2: Evaluation on the Colorfulness of Displays

“…However, few papers have been reported on quantitatively assessing perceived colorfulness using displays with various maximum luminances of white and various color gamuts. Fedorovskaya et al 1 examined perceived colorfulness by changing the colorfulness of images, but they did not change the maximum luminance of white. Similarly, Sakurai et al [2][3] examined the relationship between display's gamut and perceived gamut, but they did not change the maximum luminance of white.…”

Dependence of the color appearance of some flowers on illumination

“…Higher chroma levels are generally more attractive to the human eye. [24][25][26][27][28] Hence, when a 6500 K fluorescent lamp is used, illuminance levels higher than 500 lx are suitable for warm-colored and green flowers, considering the higher colorfulness and lower color difference. White, purple-blue, and purple flowers exhibited negligible color changes, indicating that they are less sensitive to the illuminance level.…”