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Daniel DUPONT: Lecturer-Researcher at ESTIT, École supérieure des techniques industrielles et des textiles - Member of ERASM, Research team in automatic systems and microsystems - Member of GEMTEX, Materials and Textile Engineering Laboratory
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Daniel STEEN: Lecturer-Researcher at ESTIT, École supérieure des techniques industrielles et des textiles - Head of ESTIT Colorimetry Laboratory - Member of GEMTEX, Materials and Textile Engineering Laboratory
INTRODUCTION
Color is an essential element in the visual appearance of an object, in addition to texture, shape, brilliance and so on. Very often, color is characterized by data taken from a reference system such as a color atlas, or from a color space. In most of these spaces, color is identified by three values, e.g. one for lightness and two for chromaticity: hue and saturation.
This article introduces the basics of colorimetry, explaining first what color is, then how it's calculated and represented in a color space.Next, we describe how to compare colors, and the systems of acceptability linked to this comparison.The different types of devices used to measure color, before discussing various information linked to color controls, are the subject of a second article. .
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Colorimetry
What is color?
