PICTURE READER

PURPOSE:To expand the dynamic range of separated color light data by detecting separated color light from the same picture element by an image sensor twice or more times as changing an exposure value, and coupling the detected separated color light data of the same picture element. CONSTITUTION:At t...

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Bibliographic Details
Main Authors SAWANO HIDEMICHI, KURATA MICHIO, SUGIYAMA MASAYUKI, FUJITA HIDEJI, HORIGUCHI SATORU
Format Patent
LanguageEnglish
Published 12.04.1990
Subjects
CINEMATOGRAPHY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:PURPOSE:To expand the dynamic range of separated color light data by detecting separated color light from the same picture element by an image sensor twice or more times as changing an exposure value, and coupling the detected separated color light data of the same picture element. CONSTITUTION:At the time changing the separated color light, a disk 28 is rotated, and a color separation filter 26 is switched repeatedly in the order of R G B shielding R. In one revolution of the disk 28, the picture element is exposed to two kinds of large and small illuminating quantities of light. Thus, at the time of the large illuminating quantity of light, the state of a dark part is made clear, and at the time of the small illuminating quantity of light, the state of a bright part is made clear. By coupling the data of the same picture element exposed in such a way, the dynamic range of a picture reading device is expanded larger than the inherent dynamic range of a linear image sensor 38.
Bibliography:Application Number: JP19880253215