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The often witnessed pixelized stairsteps of a low resolution image is not a direct consequence of what would correctly be called aliasing as no "false frequencies" are present but because the pixel pattern is simply not detailed enough.
On January 25, 2013, the BBC announced that the BBC Natural History Unit would produce Survival—the first wildlife TV series recorded in 4K resolution.
Thus, all the details exceeding the Nyquist frequency, which is determined by the resolution of the display like a TV or projector, will fold back into the given bandwidth, leading to distortion in the form described before.
This issue is not caused by the limited resolution of the display and can principally be avoided by filtering the original image when downscaling it to the proper native display resolution.
The Consumer Electronics Association announced on October 17, 2012, that "Ultra High Definition", or "Ultra HD", would be used for displays that have an aspect ratio of 16:9 or wider and at least one digital input capable of carrying and presenting native video at a minimum resolution of 3840×2160 pixels.
Ultra-high-definition television (also known as Ultra HD television, Ultra HD, UHDTV, UHD and Super Hi-Vision) today includes 4K UHD and 8K UHD, which are two digital video formats that were first proposed by NHK Science & Technology Research Laboratories and later defined and approved by the International Telecommunication Union (ITU).
During IBC 2008 Japan's NHK, Italy's RAI, BSky B, Sony, Samsung, Panasonic Corporation, Sharp Corporation, and Toshiba (with various partners) demonstrated the first ever public live transmission of UHDTV, from London to the conference site in Amsterdam.
Also in May 2012, NHK showed the ultra-high-definition imaging system it has developed in conjunction with Shizuoka University, which outputs 33.2-megapixel video at 120 fps with a color depth of 12 bits.
This was announced after the BBC had experimented with 8k during the London Olympics.
On April 11, 2013, Bulb TV created by Canadian serial entrepreneur Evan Kosiner became the first broadcaster to provide a 4K linear channel and VOD content to cable and satellite companies in North America.
Compared to the audio domain, it is essentially noise shaping.
In the case of images and video, the "noise" will be shifted into frequencies beyond what the eyes are able to resolve, cleaning up the usable bandwidth which is the actual image the user is supposed to see. 2020, higher dynamic range, and higher frame rates to work on HD services without increasing resolution to 4K, providing improved quality without as high of an increase in bandwidth demand.
UHDTV, however, allows other image enhancements than pixel density. 2020 color space covers 75.8%, compared to coverage by the DCI-P3 digital cinema reference projector color space of just 53.6%, 52.1% by Adobe RGB color space, while the Rec. On December 31, 2006, NHK demonstrated a live relay of their annual Kōhaku Uta Gassen over IP from Tokyo to a 450 in (11.4 m) screen in Osaka.