A comparative study of the dependency of colour measurement on surface temperature

Abstract

In this paper, we evaluated in depth how the spectrophotometric colour measurement of an object will respond to surface temperature change. The colorimetric variations of eight coloured ceramic tiles against temperature changes were studied. Colorimetric data measured at specific temperature were compared with data measured at about 20 °C. For each coloured ceramic tile, reflectance curves and colorimetric differences resulting from temperature differences were examined to demonstrate the exact dependency of colorimetric properties across the temperature range studied. Experimental data showed that peaks and slopes on a reflectance curve are the major impact resulting from temperature variation. Colours with lower lightness and lower chroma showed smaller colorimetric changes with change in temperature, while colour with higher lightness and chroma exhibited a distinct thermochromism and linearity changes across the temperature range. A conspicuous correlation potential between surface temperature and CIE colorimetric coordinates was observed.

Evaluation of the color measurement based on a microscopic hyperspectral imaging system

“…The principle of hyperspectral image acquisition based on the line‐scan method was that the detector captured the two‐dimensional monochrome image ( x , λ ) at a time, then, the complete hyperspectral image with the y‐ axis was acquired with an electronically controlled movement platform (HSIA‐MScope‐X, Dualix Co, Ltd, Chengdu, China). An optical low pass filter was used to filter out infrared radiation to eliminate the influence of temperature variation 21 . A computer with Intel (R) Core (TM) i7‐7700HQ CPU @ 2.8 GHz processor was used for hyperspectral image acquisition and data processing.…”

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

“…While some colors (eg, orange, yellow and red) are more sensitive to temperature change in terms of CIE L* , a* , b* , and C* data, the hue angle in CIELAB colorimetric data is an exception among ceramic tiles. 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 …”

“…The colored samples with higher chroma have been observed to have significant temperature variation. 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.…”

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

“…From the previous studies by the author, it could be seen that all colors show a certain degree of thermochromism. Some colors are especially sensitive to temperature fluctuation while others are not …”

“…Some colors are especially sensitive to temperature fluctuation while others are not. 4,5 Several previous studies on this topic dated back to 1980s, unanimously used ceramic colored standards. In 1984, Compton reported that thermochromism is only just significant in seven of the twelve colored tiles.…”