Color appearance of color chips in the environment lit with LED lamps

Name: Phubet Chitapanya

Address: Pathum thani

Organization : Rajamangala University of Technology Thanyaburi. Faculty of Mass Communication Technology. Program in Color Science and Human Vision

keyword: Color constancy

ThaSH: Colors -- Analysis

Classification :.LCCS: QC 494

; Color appearance

ThaSH: Colors

Abstract: The aim of this study stemmed from the prevailing use of LED lighting systems in today's world. Recognizing the impact of this technology on color perception is essential, and this motivated the detailed exploration within the study. A total of one hundred participants were invited to evaluate 26 unique color chips under six colored LEDs illuminations - Red, Yellow, Green, Cyan, Blue, and Magenta, each with two different saturation levels. A white light (D65) was utilized as the reference illuminations along with a white fluorescence light. The elementary color naming method was employed for evaluations within a controlled experimental room. One of the key outcomes of this study was the introduction of a perceptual color constancy index. This index demonstrated a more rapid decrease under green, cyan, and yellow illumination when the saturation of the illumination increased. TheRMSE for color appearance under white fluorescence and white LEDs light was found to be 0.11. Itwas observed that LEDs exhibited a higher chromaticness than fluorescence lights. Additionally, in less vivid illumination conditions, the color appearance of the color chips was observed to shift in four different hue directions, consistent with the opponent color theory. For the more vivid illumination conditions, there were at least two distinct hue shift directions. These shifts appeared to correlate with the complementary color of color density to the color illumination. The results of this study can serve as a foundation for future research, especially towards improving color prediction models, given the significant presence of LED lighting in modern settings.

Rajamangala University of Technology Thanyaburi. Office of Academic Resource and Information Technology

Address: PATHUM THANI

Email: elibrary@mail.rmutt.ac.th

Name: Chanprapha Phuangsuwan

Role: Faculty advisor

Created: 2568

Modified: 2025-03-31

Issued: 2025-02-11

วิทยานิพนธ์/Thesis

application/pdf

eng

DegreeName: Doctor of Philosophy

Level: Doctor's Degree

Descipline: Color Science and Human Vision

©copyrights Rajamangala Univetsity of Technology Thanyaburi

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