INCREASING THE ACCURACY OF COLOR REPRODUCTION OF IMAGES USING COLOR TRANSFORMATIONS AT THE PREPRESS STAGE

UDC 655.2/.3; 004.9

 

Sipaila Siarhei Uladzimiravich – PhD (Engineering), Associate Professor, Assistant Professor, the Department of Printing Production. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: svsip@yandex.by

 

DOI: https://doi.org/ 10.52065/2520-6729-2023-273-2-3 (In Russian).

 

Key words: color profile, color accuracy, color management system.

 

For citation: Sipaila S. U. Increasing the accuracy of color reproduction of images using color transformations at the prepress stage. Proceedings of BSTU, issue 4, Print- and Mediatechnologies, 2023, no. 2 (273), pp. 20–25. DOI: 10.52065/2520-6729-2023-273-2-3 (In Russian).

 

Abstract

Color is an important aspect of the perception of visual information. The article describes a solution to the problem of increasing the colorimetric accuracy of color reproduction of images at the prepress stage. The ability to instrumentally evaluate reproduced colors makes it possible to quantitatively characterize the features of color reproduction of image input/output devices in the form of color profiles. If the functionality of the software for creating color profiles is limited to the RGB color model, then you can use an RGB color profile to characterize the color reproduction of a CMYK device and perform color conversions between different variants of RGB color spaces using a graphics editor. In this case, the CMYK device is considered as a “black box”, the input of which is color information in the RGB color model, and the conversion of RGB numerical data to CMYK occurs inside the “black box” according to an unchanged algorithm. The use of hardware and software color profiling and color conversions at the pre-press stage can significantly improve the accuracy of color reproduction in the printing process.

 

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11.09.2023