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Proceedings Paper

A 33M-pixel wide color gamut image capturing system using four CMOS image sensors at 120 Hz
Author(s): Takuji Soeno; Kohei Omura; Takayuki Yamashita; Ryohei Funatsu; Masayuki Sugawara; Makoto Okui
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Paper Abstract

We are currently researching a next-generation broadcasting system called Super Hi-Vision (SHV). We have proposed the following video parameters for SHV: 33-million-pixel (33M-pixel) resolution, 120-Hz frame frequency, and wide gamut color system. In order to capture the SHV images, we investigate a 33M-pixel image-capturing system operable at a frame frequency of 120 Hz. The system consists of four CMOS image sensors that can not only output 33M-pixel at 60-Hz frame frequency but also output half of the 33M-pixel in either odd or even lines at 120-Hz frame frequency. Two image sensors are used for the green channel (G1 and G2), and the other two are assigned to each of the red and blue channels. The G1 sensor outputs the odd lines, while the G2 sensor outputs the even lines. A combination of G1 and G2 outputs 33M-pixel green images. The red and blue sensors scan odd lines and even lines, respectively. Subsequently, the unscanned lines are interpolated in the vertical direction. In addition, we design a prism for wide color gamut reproducibility. We develop a prototype and evaluate its resolution, image lag, and color reproducibility. The performance of the proposed system is found to be satisfactory for capturing 33M-pixel images at 120 Hz.

Paper Details

Date Published: 19 February 2013
PDF: 9 pages
Proc. SPIE 8659, Sensors, Cameras, and Systems for Industrial and Scientific Applications XIV, 865909 (19 February 2013); doi: 10.1117/12.2003292
Show Author Affiliations
Takuji Soeno, NHK Science & Technical Research Labs. (Japan)
Kohei Omura, NHK Engineering Services, Inc. (Japan)
Takayuki Yamashita, NHK Science & Technical Research Labs. (Japan)
Ryohei Funatsu, NHK Science & Technical Research Labs. (Japan)
Masayuki Sugawara, NHK Science & Technical Research Labs. (Japan)
Makoto Okui, NHK Science & Technical Research Labs. (Japan)


Published in SPIE Proceedings Vol. 8659:
Sensors, Cameras, and Systems for Industrial and Scientific Applications XIV
Ralf Widenhorn; Antoine Dupret, Editor(s)

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