Digital Cinema using Super High Definition Images
The digital movie using Super High Definition (SHD) images of 3840x2048 pixel resolution provides new format of digital cinema systems. The SHD movie system is able to store, transmit, and display extra-high quality video called 2048P/24 (2048 scanning lines, progressive, 24 frame per second.) Special devices, a motion JPEG decoder and a LCD projector are connected with a 4.5 Gbps digital video link to show full color movies of true 3840 x 2048 pixel resolution with 96 Hz refresh rate.
SHD Image
SHD images are categorized to an high-end image media that achieves the excellent digital image quality needed to satisfy professional users in various industries, e.g. printing, medicine and image archives such as electronic art galleries and museums. The SHD images have at least 2048 pixel resolution, 24-bit color separation, progressive scanning mode, refresh rate of over 60 Hz to avoid perceptible flicker, and square pixel alignment. The SHD images surpass the quality of 35-mm films in terms of spatial resolution, and have approx. 2 to 4 times better image quality than that of HDTV.
Movie System
The quality of the SHD images satisfies the requirements of archiving 35-mm films as well as distributing brand-new commercial films. The current SHD movie system is one of video on demand (VoD) system, and consists of three devices: video server, real-time SHD decoder, and LCD projector. Since video cameras to capture SHD movies are not yet available, we assume that all the data has been digitized from original films by a film digitizer, then compressed and stored in advance. The SHD decoder decompresses the video streams transmitted from the server using Gigabit Ethernet (GbE), and outputs digital video data to the LCD projector with a display resolution of 3840x2048 pixels.
Prototype System Components for 2048p/24 Digital Cinema
Video Server: The original data, usually available by digitizing films, amount to 380G bytes for an 11-minute long movie. They are encoded by JPEG with 15:1 compression ratio. The compressed 25G byte data are transmitted from the video server running on a PC/LINUX as 300M bps IP/GbE data streams.
SHD Decoder: The decoder receives the IP data streams at a front-end PC/LINUX, then performs the real-time JPEG decompression at a speed of 200M pixels per second, using special circuit boards equipped with 32 parallel JPEG processing elements.
LCD Projector: The projector uses 3 pieces of 3840x2048 pixel reflective-type LCD panels, which luminance exceeds 5000 ANSI lumens. To improve the image quality by eliminating the limitation of video frequency pass-band and additive noises, the projector utilizes special digital video interface of 4.5G bps to the decoder.
Technical Demonstration Schedule
DCC (Digital Cinema Consortium)
The Digital Cinema Consortium (DCC) was established in February 2001 in Tokyo, Japan to promote the development, test, evaluation and standardization of very high quality digital cinema formats and related infrastructure.
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