Video camera system using liquid-crystal polarizing filter to reduce reflected light

Hideo Fujikake; Kuniharu Takizawa; Tahito Aida; Toshihiro Negishi; Michio Kobayashi

doi:10.1109/11.735903

Video camera system using liquid-crystal polarizing filter to reduce reflected light

Hideo Fujikake, Kuniharu Takizawa, Tahito Aida, Toshihiro Negishi, Michio Kobayashi

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We have been developed a video camera system using an electrically-controllable liquid crystal polarizing filter for television program production, which can quickly reduce undesirable reflected light from a window pane or watery surface, by automatically judging the polarization state of incident light from the change in video signal intensity. More than 80% of linearly-polarized incident light is removable by this method for all incident polarization angles. The time required for detecting and reducing reflected light is approximately 0.3s in our system. The drastic reduction of polarized light reflected from glass and watery surfaces was demonstrated, and object images obscured by bright reflected light were clearly captured in an instant.

Original language	English
Pages (from-to)	419-426
Number of pages	8
Journal	IEEE Transactions on Broadcasting
Volume	44
Issue number	4
DOIs	https://doi.org/10.1109/11.735903
Publication status	Published - 1998
Externally published	Yes

ASJC Scopus subject areas

Media Technology
Electrical and Electronic Engineering

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10.1109/11.735903

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abstract = "We have been developed a video camera system using an electrically-controllable liquid crystal polarizing filter for television program production, which can quickly reduce undesirable reflected light from a window pane or watery surface, by automatically judging the polarization state of incident light from the change in video signal intensity. More than 80% of linearly-polarized incident light is removable by this method for all incident polarization angles. The time required for detecting and reducing reflected light is approximately 0.3s in our system. The drastic reduction of polarized light reflected from glass and watery surfaces was demonstrated, and object images obscured by bright reflected light were clearly captured in an instant.",

author = "Hideo Fujikake and Kuniharu Takizawa and Tahito Aida and Toshihiro Negishi and Michio Kobayashi",

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AU - Fujikake, Hideo

AU - Takizawa, Kuniharu

AU - Aida, Tahito

AU - Negishi, Toshihiro

AU - Kobayashi, Michio

PY - 1998

Y1 - 1998

N2 - We have been developed a video camera system using an electrically-controllable liquid crystal polarizing filter for television program production, which can quickly reduce undesirable reflected light from a window pane or watery surface, by automatically judging the polarization state of incident light from the change in video signal intensity. More than 80% of linearly-polarized incident light is removable by this method for all incident polarization angles. The time required for detecting and reducing reflected light is approximately 0.3s in our system. The drastic reduction of polarized light reflected from glass and watery surfaces was demonstrated, and object images obscured by bright reflected light were clearly captured in an instant.

AB - We have been developed a video camera system using an electrically-controllable liquid crystal polarizing filter for television program production, which can quickly reduce undesirable reflected light from a window pane or watery surface, by automatically judging the polarization state of incident light from the change in video signal intensity. More than 80% of linearly-polarized incident light is removable by this method for all incident polarization angles. The time required for detecting and reducing reflected light is approximately 0.3s in our system. The drastic reduction of polarized light reflected from glass and watery surfaces was demonstrated, and object images obscured by bright reflected light were clearly captured in an instant.

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Video camera system using liquid-crystal polarizing filter to reduce reflected light

Abstract

ASJC Scopus subject areas

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