“IRODORI – A Color-rich Palette Based on Natural Vision Technology-” by Kishimoto, Yamaguchi, Haneishi and Ohyama

  • ©Junko Kishimoto, Masahiro Yamaguchi, Hideaki Haneishi, and Nagaaki Ohyama


Entry Number: 12


    IRODORI - A Color-rich Palette Based on Natural Vision Technology-




    “Natural Vision” is a novel color imaging technology developed through research into high-fidelity image reproduction for TV systems, i.e., high fidelity in terms of color, glosses and textures. The technology has been studied since 1999 in a research project directly controlled by the Telecommunications Advancement Organization of Japan (The present National Institute of Information and Communication Technology).

    One of the features of Natural Vision is that the use of a multispectral camera and a multiprimary display allows natural color reproduction which is far beyond the capacity of the conventional RGB (red-green-blue) system. Most existing display devices utilize three primary colors: red, green, and blue (RGB). In contrast, Natural Vision dramatically increases the color range that can be displayed by using a multiprimary display with four or more primary colors.

    As an important extension of this project, we are conducting research and development into applying this ability to display an increased number of colors to computer graphics. We have developed a user interface for mixing multi-primary colors, and demonstrated the psychological effects of viewing an extended range of colors, particularly those with high chroma. As a result of this study, we have built IRODORI system, a color palette which allows people to experience a wider range of colors that are not accessible through conventional RGB display devices.


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