A statistical analysis for correlation approach to compensate the measured CIELAB colorimetric data for temperature alterations

Abstract

The main focus of this work was to elucidate the further question of whether the color change correlated linearly with the surface temperature alteration or not. We selected and grouped the colored samples, which were in the form of textile, ceramic, plastic, paint, and ink. Those samples were first measured by IR Thermometer to record exact surface temperature, followed by an immediate color measurement using a spectrophotometer. The color variations of these samples were recorded from about 20°C to 60°C. The trend of CIELAB color coordinates was plotted against surface temperature. The dependency between each CIE colorimetric coordinate and the object's surface temperature was statistically evaluated using Pearson's r, R value, and R‐square analysis. A very strong correlation was observed for ceramic, paint, and ink samples tested, while the textile and plastic sample also exhibited a strong trend. The results added new information about the potential correlation between colorimetric data and temperature. Implications for the future research are discussed.

Relative analysis of the dependency of spectrophotometric data on temperature using textiles, ceramics, plastics, paints, and printed materials

“…Several interesting findings have been identified from previous studies: achromatic colors, such as white, black, and gray, all exhibit lower sensitivity to temperature variation; there is a slight hue shift in achromatic colors for the ceramic samples, but not in the lightness or chroma values of these samples. On the other hand, some colors demonstrate a significant colorimetric shift with temperature change, while the hue angle remains almost constant.…”

“…The colored samples with higher chroma have been observed to have significant temperature variation . It was explained that the color data of ceramic tiles measured at temperatures other than 20°C might be mathematically corrected to the colorimetric data at standard condition specified by ASTM …”

“…13 It was explained that the color data of ceramic tiles measured at temperatures other than 20 C might be mathematically corrected to the colorimetric data at standard condition specified by ASTM. 14,15 In this study, an effort was made toward identifying the temperature dependency on colorimetric properties of textile fabrics, ceramic tiles, plastic plaques, ink-printed paper cards, and paintcoated paper cards. Temperature variations were recorded using a noncontact thermometer with respect to colorimetric data measured by a spectrophotometer.…”