Development of a Real-time HDTV Electronic Zoom System Using Super Hi-Vison Video
Ryohei Funatsu, Taku Tsukamoto, Takayuki Imamura, Takayuki Yamashita, Kohji Mitani, Yuji Nojiri · The Journal of The Institute of Image Information and Television Engineers · 2009
We developed a real-time electronic zoom system that can crop any area in a four-sensor pick-up type Super Hi-Vision (SHV) video and output the area as an HDTV video. The cropped area can be selected using the type of remote control used in a conventional robotic camera system. The maximum zoom ratio is 4X to maintain the HDTV quality. This electronic zoom system enables new program production techniques. For example, an HDTV video of a decisive moment can be cropped from a wide-angle SHV video shot. To evaluate the quality of the cropped image, we examined the resolution, S/N, and chromatic aberrations of generated images. The evaluation results showed that the quality of the cropped HDTV video is good enough for use in HDTV program production.