“Device-independent imaging system for high-fidelity colors” by Tomizawa, Yoshida, Hasegawa, Yoshida, Katoh, et al. …

  • ©Kazunari Tomizawa, Akiko Yoshida, Makoto Hasegawa, Yasuhiro Yoshida, Shinichi Katoh, Kenichi Nishizawa, Osamu Ozawa, and Yoshifumi Shimodaira




    Device-independent imaging system for high-fidelity colors



    An imaging system, in general, consists of a capturing system (i.e., a camera), a signal transmission process, and an output device (display and/or printing systems). When capturing a picture, colors are captured by an imaging sensor on a camera, whose spectral responses are, in general, highly different from the color matching functions of CIE 1931. Such cameras show non-colorimetric response and provides inaccurate color information of a captured object. Additionally, when storing data, different digital cameras generate different signals in red, green, and blue (RGB), whose reproduction is highly dependent each device. Then, a display device applies its own color conversion based on RGB format. As a result, no colors are correctly captured and reproduced. A severe miscommunication happens between capturing and displaying systems as far as using device-dependent imaging systems. In order to really reproduce images of high-fidelity colors on a display, it is essential for the imaging system to adopt colorimetric method not only in displaying and but also in capturing images. Therefore, we propose a device-independent imaging system which can accurately capture colors and faithfully reproduce colors.

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