20 February 2007 Characteristics of experimental single-chip color HDTV image acquisition system with 8M-pixel image sensor
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We developed an experimental single chip color HDTV video image acquisition system with 8M-pixel CMOS image sensor. The imager has 3840 (H) × 2160 (V) effective pixels and built-in analog-to-digital converters, and its frame rate is 60-fps with progressive scanning. The MTF characteristic we measured with this system on luminance signal in horizontal direction was about 45% on 800 TV lines. This MTF was better than conventional three-pickup broadcasting cameras, therefore the enhancement gain (the "enhancement area" in MTF) of the 8M single-chip HDTV system was about a half of the three-pickup cameras. We also measured the color characteristics and corrected the color gamut using matrix gain on primary colors. We set the color correction target similar to that of three-pickup color cameras in order to use multiple cameras to shoot for broadcasting, where all cameras are controlled in the same manner. The color error between the single-chip system and three-pickup cameras after the correction became 2.7, which could be useful in practice.
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Hiroshi Shimamoto, Hiroshi Shimamoto, Takayuki Yamashita, Takayuki Yamashita, Ryohei Funatsu, Ryohei Funatsu, Kohji Mitani, Kohji Mitani, Yuji Nojiri, Yuji Nojiri, } "Characteristics of experimental single-chip color HDTV image acquisition system with 8M-pixel image sensor", Proc. SPIE 6502, Digital Photography III, 65020Q (20 February 2007); doi: 10.1117/12.705337; https://doi.org/10.1117/12.705337


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