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Journal of Electronic Imaging

Ultrahigh-definition color video camera system with 8K×4K pixels
Author(s): Kohji Mitani; Masayuki Sugawara; Hiroshi Shimamoto; Takayuki Yamashita; Fumio Okano
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Paper Abstract

We developed an experimental ultrahigh-definition color video camera [7680(H)×4320(V) pixels] using four 8-million-pixel charge-coupled devices (CCDs) to increase the camera’s resolution. This involves attaching four CCDs to a special color separation prism. Two CCDs are used for the green image; the other two are used for the red and blue images. Our prototype camera attains a limiting resolution of more than 2700 television lines, both horizontally and vertically. Camera sensitivity is F/2.8 at 2000 lux, with a luminance signal dark-noise level of approximately 50 dB in high definition television format. To analyze camera performance, we estimated the spatial position error between the two green CCDs and the chromatic aberration. Based on these estimations, the cause of resolution deterioration and ways to improve resolution are discussed.

Paper Details

PDF: 8 pages
J. Electron. Imaging. 17(2) 023014 doi: 10.1117/12.476793
Published in: Journal of Electronic Imaging Volume 17, Issue 2, April 2008
Show Author Affiliations
Kohji Mitani, Japan Broadcasting Corp. (Japan)
Masayuki Sugawara, Japan Broadcasting Corp. (Japan)
Hiroshi Shimamoto, NHK Science & Technical Research Labs. (Japan)
Takayuki Yamashita, NHK Science & Technical Research Labs. (Japan)
Fumio Okano, NHK Science & Technical Research Labs. (Japan)

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