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Proceedings Paper

Wide-dynamic-range camera using a novel optical beam splitting system
Author(s): Takayuki Yamashita; Masayuki Sugawara; Kohji Mitani; Fumio Okano
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Paper Abstract

A wide dynamic range camera for high picture quality use is proposed. The camera is equipped with a novel optical beam splitting system. It first divides incident light into two different intensity lights. Small intensity light is taken by a single-chip color imager. The other large intensity light is further led to a tri-color prism and taken by three imagers. These functions are integrated into one-piece optical block, which is suited for 2/3-inch optical format standard. An experimental HDTV camera has been developed. The exposure ratio was set as 9:1. A high exposure image is taken by three 2M-pixel CCDs and a low exposure image is taken by a single-chip color 2M-pixel CCD with an on-chip stripe color filter. The results have shown that the validity of the proposed method for obtaining wide dynamic range images with high picture quality.

Paper Details

Date Published: 24 April 2002
PDF: 7 pages
Proc. SPIE 4669, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications III, (24 April 2002); doi: 10.1117/12.463415
Show Author Affiliations
Takayuki Yamashita, NHK Science and Technical Research Labs. (Japan)
Masayuki Sugawara, NHK Science and Technical Research Labs. (Japan)
Kohji Mitani, NHK Science and Technical Research Labs. (Japan)
Fumio Okano, NHK Science and Technical Research Labs. (Japan)


Published in SPIE Proceedings Vol. 4669:
Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications III
Nitin Sampat; John Canosa; Morley M. Blouke; John Canosa; Nitin Sampat, Editor(s)

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