Automatic color–temperature compensator with guest–host liquid–crystal filter for video image sensing

Hideo Fujikake, Jun Yonai, Hiroto Sato, Hiroshi Kikuchi, Yoshiki Iino, Masahiro Kawakita, Yuzuru Tsuchiya, Kenichi Iwashita, Shinya Umeda

研究成果: Article査読

3 被引用数 (Scopus)

抄録

A color-temperature compensating system with an electrically controllable liquid-crystal filter and a color sensor mounted on a video camera has been developed for color image sensing. The filter contains two guest—host liquid-crystal devices with dichroic dyes that have strong light absorption for shorterwavelength light; two devices are necessary because of the spectral difference between the sun and an incandescent lamp as light sources. The filter’s absorption is continuously controlled by the voltage applied to the filter. Because the filter is driven according to spectral information about the illumination detected by the color sensor, the color balance of the video image to be sensed can be compensated automatically and rapidly. This is especially useful for video image shooting in which a video camera experiences changes in illumination color temperatures.

本文言語English
ページ(範囲)2275-2281
ページ数7
ジャーナルApplied optics
40
14
DOI
出版ステータスPublished - 2001 5月 10
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 工学(その他)
  • 電子工学および電気工学

フィンガープリント

「Automatic color–temperature compensator with guest–host liquid–crystal filter for video image sensing」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル