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Discussion Starter · #1 ·
Start placing your orders for a new UHDV player.


Reality TV



A prototype digital video system producing images of such high quality that the human eye struggles to distinguish them from reality has been developed by Japanese engineers.

The system, called ultra high definition video (UHDV), achieves image resolution 16 times greater than even the most advanced video broadcasting technologies now available.

Its developers at the Japan Broadcasting Corporation (NHK) said the system could be used to provide an ultra realistic 'immersive' viewing experience when, for example, showing sporting events.

UHDV displays images with 4,000 horizontal scanning lines, compared to the 1,000 offered by the current state-of-the-art high definition television (HDTV) technology and just 625 for standard TV broadcasts. When horizontal and vertical scanning are both taken into account a UHDV picture contains 16 times the number of pixels ? individual image components - of HDTV.

NHK, which unveiled details of UHDV for the first time at broadcast technology conference IBC in Amsterdam, said its engineers had to custom-design a video camera, data-storage device and projection system, as no standard broadcasting equipment could cope with their extreme demands.

The camera was built by aligning four 2.5in charge coupled device (CCD) image-capture panels. The projector system uses four liquid crystal-on-silicon panels, two of which process green light while the other two each handle red and blue. These must be aligned to an accuracy of within 0.5 of a pixel - there are 33 million pixels on display - to achieve ultra high definition results.

Recording the massive amounts of data needed to produce UHDV definition also posed a problem for NHK. Its engineers were originally only able to make 34 seconds' worth of recording. They have now built a disc recorder system made up of 16 HDTV recorder units with a capacity of about 3.5 terabytes, allowing them to shoot 18 minutes of UHDV footage.

NHK researcher Dr. Kohji Mitani said the project team had shot a three-minute demonstration video by attaching the camera to the front of a vehicle and driving it around the streets.

The footage was then shown to members of the public on a 4x7m wide-angle screen provoking, according to Mitani, gasps of astonishment. Some viewers even experienced nausea because of the ultra realistic visual effect of speed without the usual physical sensation of movement.

Mitani said the system was still at a basic stage of development, but he claimed it had proved that image qualities so realistic that they approximated to actually being at the recorded event were possible.

NHK will now attempt to reduce the size of the camera and look at the possibility of developing transmission systems that could broadcast UHDV footage.

Dr. Nicolas Lodge of UK broadcast technology specialist Pro-Vision Communications, who chaired the IBC session at which UHDV was presented, said the NHK work was 'amazing stuff. They are on the way to creating an experience that mimics actually being there. It is an exciting area of research
 

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I am disappointed that my cable company isn't providing this service yet -- I'm gonna threaten to cancel and get satellite!!!
 

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That's weird. When I view 1600x1200 images on my 21" computer monitor (which operates at 1600x1200), I never get confused between the images and real life, even if the image is of an apple, which could be represented by its own real size, in my small monitor.


Just for comparison, in order to represent a real sized apple, on a "7X4 meter screen", with the same resolution as 1600x1200 on a 21" computer screen, you'll need 28,000 horizontal lines. They say that their technology is only limited to 4,000 horizontal lines.


I think that in order to really bewilder the brain, more than HDTV resolution, is not obligatory. What is important, is an efficient 3D capability of the monitor.


It reminds me of the constant fight of several manufacturers, to enhance the sampling rate and bit rate of audio recordings and processing hardware. They don't really care that the true bottleneck for sound to be perceived as "real", lies in the acoustics of the room, deployment method (ie. stereo sucks, and 5.1 is far from ideal too), quality of speakers, and quality and the technique used with the recording microphone, which records the songs.
 

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I think you got it a little weird. Your formula equals number of pixels, not horizontal resolution.


from audiovideo101


"There are two primary HDTV standards, 1080i and 720p. With 1080i the resolution is set at 1920 pixels across (left to right) - its horizontal resolution - and 1080 pixels top to bottom - its vertical resolution. The 720p standard provides for 1280 pixels across (horizontal resolution) and 720 top to bottom (vertical resolution)."


So it looks like their resolution is 4000 x 2250 which is pretty good. It would be incredible if they could do a progressive picture as well, offering more frames per second.


Just think if they could add 3d effects like I have seen at some computer conventions!
 

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Discussion Starter · #6 ·
I think 3D technology is already out there. When you watch a Leowe, or a Bang Olufson, and the Philips with a lot of added artifacts. These TVs show the 3d technology now and it is pretty amazing.
 
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