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首页> 外文期刊>Motion Imaging Journal, SMPTE >Development of a 70mm, 25-Megapixel Electronic Cinematography Camera with Integrated Flash Recorder
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Development of a 70mm, 25-Megapixel Electronic Cinematography Camera with Integrated Flash Recorder

机译：带有集成闪光灯记录器的70mm，25百万像素电子摄影相机的开发

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摘要

This paper describes the system design of the world's first 70mm, 25-megapixel, electronic-cinematography camera with an integrated flash memory recorder. Although this camera shares many of the attributes of NHK's ultrahigh-definition television (UHDTV) and benefits from NHK's pioneering research in the area of very high-resolution imaging, what is described is an electronic cinematography camera and recorder—not a television camera. While the unique requirements of the cinematographic process allow us to take advantage of certain processes that would not be practical in a television environment, we must also make provision for requirements that are unique to moviemaking. The single complementary metal oxide semiconductor (CMOS) sensor in the new Panavision camera has the same four times HDTV horizontal resolution of 7680 photosites as that proposed by NHK for UHDTV. Our sensor's vertical resolution is only three times the HDTV vertical for a resolution of 3240 photosites, and it has an aspect ratio of 2.37:1, rather than UHDTV's 16 × 9, 1.78:1 aspect ratio. Bucking the recent trend to take a lower-resolution imager and interpolate to a higher resolution, the Panavision camera utilizes an oversampling technique to output a full-bandwidth, 19-megapixel, red-green-blue (RGB) image from the available 25 million photosites. The recorded frame size is 3840 × 1620 × 3 (RGB) or 18,662,400 pixels.
机译：本文介绍了世界上第一台具有集成闪存记录器的70mm，25兆像素电子电影摄影机的系统设计。尽管此摄像机具有NHK的超高清电视（UHDTV）的许多特性，并且受益于NHK在超高分辨率成像领域的开拓性研究，但所描述的是电子电影摄影机和录像机，而不是电视摄像机。摄影过程的独特要求使我们能够利用在电视环境中不可行的某些过程，但我们还必须提供电影制作所独有的要求。新型Panavision摄像机中的单个互补金属氧化物半导体（CMOS）传感器具有7680个照相站点的四倍HDTV水平分辨率，是NHK为UHDTV提议的水平。我们的传感器的垂直分辨率仅是HDTV垂直分辨率的3倍，分辨率为3240个摄影站点，并且其纵横比为2.37：1，而不是UHDTV的纵横比为16×9、1.78：1。 Panavision相机采用了过采样技术，可从可用的2500万像素中输出全带宽，19兆像素，红绿蓝（RGB）图像，从而逆转了采用低分辨率成像仪并内插到更高分辨率的最新趋势。照片。记录的帧尺寸为3840×1620×3（RGB）或18,662,400像素。

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