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Dive into the research topics where Takehiko Nakai is active.

Publication


Featured researches published by Takehiko Nakai.


Archive | 1993

Image processing apparatus and method, and image reading apparatus

Hiroshi Tanioka; Shinobu Arimoto; Yoshinobu Sato; Kazuo Yoshinaga; Toshio Hayashi; Takehiko Nakai; Tsutomu Utagawa; Tetsuya Nagase; Junko Kuramochi; Nobuatsu Sasanuma; Yoshiki Uchida


Archive | 1994

Invisible information recorded medium

Kazuo Yoshinaga; Hiroshi Tanioka; Shinobu Arimoto; Toshio Hayashi; Takehiko Nakai; Tsutomu Utagawa; Tetsuya Nagase; Nobuatsu Sasanuma


Archive | 1997

Image reading device with offset faces for visible and non-visible light sensors

Takehiko Nakai; Hiroshi Tanioka; Shinobu Arimoto; Kazuo Yoshinaga; Toshio Hayashi; Tsutomu Utagawa; Tetsuya Nagase; Nobuatsu Sasanuma


Archive | 1995

Image reading and copying using plural illumination sources having different characteristics

Tsutomu Utagawa; Shinobu Arimoto; Kazuo Yoshinaga; Toshio Hayashi; Takehiko Nakai; Tetsuya Nagase; Nobuatsu Sasanuma


Archive | 1990

IMAGE READING APPARATUS HAVING A BLAZED DIFFRACTION GRATING

Takehiko Nakai; Michitaka Setani


Archive | 1993

Image reading apparatus and copying apparatus having means for radiating visible and non-visible light, image processing apparatus having means for discriminating a specific orginal and image processing method therefor

Toshio Hayashi; Shinobu Arimoto; Kazuo Yoshinaga; Takehiko Nakai; Tsutomu Utagawa; Tetsuya Nagase; Nobuatsu Sasanuma


Archive | 1997

Non-visualized information recording medium and apparatus for detecting the same

Kazuo Yoshinaga; Shinobu Arimoto; Toshio Hayashi; Takehiko Nakai; Tsutomu Utagawa; Tetsuya Nagase; Nobuatsu Sasanuma


Archive | 1996

Optical modulators and color image display device employing the same

Junko Kuramochi; Michitaka Setani; Takehiko Nakai; Saburo Sugawara


Archive | 1993

Image processing apparatus having means for detecting non-visible light, and image processing method therefor

Shinobu Arimoto; Katsuichi Shimizu; Yutaka Komiya; Kazuo Yoshinaga; Toshio Hayashi; Takehiko Nakai; Tsutomu Utagawa; Tetsuya Nagase; Nobuatsu Sasanuma


Archive | 1997

Photosensor with filter for cutting off the input of invisible information

Shinobu Arimoto; Kazuo Yoshinaga; Toshio Hayashi; Takehiko Nakai; Tsutomu Utagawa; Tetsuya Nagase; Nobuatsu Sasanuma

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