SIGGRAPH 2004 - The 31st international conference on computer graphics and interactive techniques
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IRODORI: A Color-Rich Palette Based on Natural Vision Technology
IRODORI uses a novel display technology to render new colors that cannot be reproduced by existing displays, such as high-chroma colors, luminescent and fluorescent colors, and very deep, dark hues.

Life Enhancement
It is now possible to design computer graphics using colors that are seldom encountered. This capability broadens the range of expressions available in the digital world. Digital images will have greater power than ever before.

IRODORI provides new tools for creators. Initial applications will be in media and digital art, but this new technology will gradually expand to theaters and video-game projection (which call for stimulating and high-chroma expression) and TV and personal-computer displays. The best way for people to appreciate IRODORI is to actually experience its expanded choice of colors, because when it comes to communicating a color story, "Seeing is believing."

The goal of this project is to expand the visual-telecommunication system with high-fidelity, natural-color reproduction capability. It incorporates multispectral and multiprimary imaging technologies in the color-imaging platform to enhance digital expression.

The core IRODORI technology is an interactive CG rendering system that uses multiprimary display. A six-primary-color projection system is composed of two modified LCD projectors. Different sets of filters are employed in the two projectors. Images projected from the two projectors are overlaid on the screen. The six-primary-color projector can reproduce a color gamut 1.6 times larger than conventional projection systems. In addition to an LCD projector system, the IRODORI team has also developed several types of multiprimary display systems, such as a six-primary-color DLP projector system, a four-primary-color flat panel LC display, and new hardware that corrects geometrical distortion caused by the different positions of the two projectors.

The system includes new color conversion methods, which are essential for generating multiprimary color signals from colorimetric image data. A six-primary-color projector system is connected to an ordinary PC, so conventional and familiar CG software can be used. The three-to-six signal converter has a three-channel input interface and a six-channel output interface, and uses 3D-LUT interpolation.The three-to-six signal converter and these technologies allow the user to naturally and interactively draw CG images on a multiprimary display system.

Tuesday, 10 August
8:30 - 10:15 am
Room 404AB

Junko Kishimoto
National Institute of Information and Communications Technology

Hiroyuki Fukuda
National Institute of Information and Communications Technology

Hideaki Haneishi
Chiba University

Yuki Iizuka
TAO Akasaka Natural Vision Research Center

Masami Nishiko

Nagaaki Ohyama
Tokyo Institute of Technology

Masaru Tsuchida
National Institute of Information and Communications Technology

Masahiro Yamaguchi
Tokyo Institute of Technology

emerging technologies jury and committee
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Conference 8-12 August, Exhibition 10-12 August.  In Los Angeles, CA