Color Science PH.D. Defense: Ambient Environment Effect on Color Perception
Color Science Ph.D. Defense
Ambient Environment Effect on Color Perception
Eddie Pei
Color Science Ph.D. Candidate
Rochester Institute of Technology
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Abstract:
The ambient environment—including both background and surround conditions—is a critical factor influencing color perception. It affects not only how we perceive colors but also how we interpret complex visual scenes, impacting both sensory processing and cognitive interpretation. This thesis focuses on three major perceptual phenomena: simultaneous contrast, mixed chromatic adaptation, and color preference. First, the effects of simultaneous contrast on hue, chroma, and lightness in traditional displays were explored. This study was extended to a dual-display augmented reality (AR) environment that introduces layered perception. An extension to the CIECAM16 color appearance model is proposed to incorporate this effect. Second, the impact of a mixed lighting environment created by variations in the luminance and chromaticity of the background and surround influence chromatic adaptation mechanisms was examined. Based on the findings, modeling frameworks to better account for these effects are proposed. And third, image and video preference under different ambient environments were explored, revealing that ambient conditions, content, observer characteristics, and display all significantly influence visual preference. Together, these studies highlight the importance of ambient environmental factors in color perception, emphasizing their impact across appearance, adaptation, and aesthetic judgment.
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