Mathematical model of color harmony in ICAS space

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Semeniv M. R., Semeniv V. V. № 2 (63) 134-146 Image Image

An important step in creating the design of printed products is the selection of color harmony. Popular web resources for defining color palettes such as AdobeColor, Colordb, ColorExplorer, Colormunki Design, Copaso, Photocopa and others have a wide range of features. These functions are divided into two categories of color palette creation: according to a certain color scheme and from the dominant image colors. The analysis of functions of web resources of color harmony is carried out. AdobeColor and Pantone Connect have the widest possibilities of working with the color palette. Using Colord and AdobeColor is recommended to determine the dominant colors of the image, and Colormunki Design and Pantone Connect for professional work with the color palette. Colormunki works with Munsell and PANTONE colors, so it is recommended the designer to use this resource when preparing a publication.

The brightness-chromatic model in the method of color selection is applied. In Adobe Color colors are defined to match the base color. The resulting colors are converted into ICaS space, which provides simplified and accelerated color data conversion and combines the two RGB and CMYK color rendering systems. The mathematical model of color harmony in ICaS space is described and the block diagram of algorithm of its realization is developed. The use of ICaS space provides a palette of color harmony placed clearly in one chromatic plane, which is characterized by a constant value of brightness. Due to the different number of colors on the chromatic planes of constant brightness, different chromaticity values are obtained for the complementary colors. The­re­fore, the algorithm provides a choice of a constant value of the achromatic component or a constant value of chromaticity of colors that belong to the palette of harmonious com­bination.

Keywords: color harmony, color palettes, color scheme, dominant image colors, ICaS color space, mathematical model.

doi: 10.32403/1998-6912-2021-2-63-134-146


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