Ultra- high- definition television - Wikipedia. Comparison of 8. K UHDTV, 4. K UHDTV, HDTV and SDTV resolution.

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Dr. Kerns H. Powers, a member of the SMPTE Working Group on High-Definition Electronic Production, first proposed the 16:9 (1.7 7:1) aspect ratio at a time [when.

Ultra- high- definition television (also known as Ultra HD television, Ultra HD, UHDTV, UHD and Super Hi- Vision) today includes 4. K UHD and 8. K 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).[1][2][3][4]The Consumer Electronics Association announced on October 1. Ultra High Definition", or "Ultra HD", would be used for displays that have an aspect ratio of 1. In 2. 01. 5, the Ultra HD Forum was created to bring together the end- to- end video production ecosystem to ensure interoperability and produce industry guidelines so that adoption of Ultra- high- definition television could accelerate. From just 3. 0 in Q3 2.

K resolution.[7]The "UHD Alliance", an industry consortium of content creators, distributors, and hardware manufacturers, announced during CES 2. Ultra HD Premium" specification, which defines resolution, bit depth, color gamut, high- dynamic- range imaging (HDRI) and rendering (HDRR) required for Ultra HD (UHDTV) content and displays to carry their Ultra HD Premium logo.[8][9][1. Alternative terms[edit]Ultra- high- definition television is also known as Ultra HD, UHD, and UHDTV.[1. In Japan, 8. K UHDTV will be known as Super Hi- Vision since Hi- Vision was the term used in Japan for HDTV.[1. In the consumer electronics market companies had previously only used the term 4. K at the 2. 01. 2 CES but that had changed to "Ultra HD" during the 2.

CES.[1. 6][1. 7] The "Ultra HD" term is an umbrella term that was selected by the Consumer Electronics Association after extensive consumer research, as the term has also been established with the introduction of "Ultra HD Blu- ray".[2. Technical details[edit]Super Hi- Vision specifications: [1. Number of pixels: 7. Aspect ratio: 1. 6: 9. Viewing distance: 0. HViewing angle: 1.

1. 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.
2. Gizmodo has a livestream on our Facebook. NASA is streaming the solar eclipse on its Facebook page. CNN is also livestreaming on Facebook. Twitter. Twitter is.

Colorimetry: Rec. Frame rate: 1. 20 Hz progressive. Bit depth: 1. 2- bits per color RGBAudio system: 2. Sampling rate: 4.

Hz. Bit length: 1. Number of channels: 2. Upper layer: 9 ch. Middle layer: 1. 0 ch. Lower layer: 3 ch. LFE: 2 ch. Uncompressedvideo bit rate: 1. Gbit/s. Resolution[edit]Two resolutions are defined as UHDTV: [1.

UHDTV is 3. 84. 0 pixels wide by 2. UHD should not be confused with 4. K as they are not the same thing. K] [3]]UHDTV is 7.

HDTV, which brings it closer to the detail level of 1. IMAX.[1. 4][2. 3][2. NHK advocates the 8. K UHDTV format with 2. Super Hi- Vision. Color space, dynamic range, frame rate and resolution/aliasing[edit]The human visual system has a limited ability to discern improvements in resolution when picture elements are already small enough or distant enough from the viewer. At home- viewing distances and current TV sizes, HD resolution is near the limits of resolution for the eye and increasing resolution to 4.

K has little perceptual impact, as consumers are beyond the critical distance (Lechner distance) to appreciate the differences in pixel count between 4. K and HD. One exception to note is that even if resolution surpasses the resolving ability of the human eye, there is still an improvement in the way the image appears due to higher resolutions reducing aliasing. In this context, it is important to be aware of two different types of what is often referred to be aliasing, but occur because of different reasons: The first one results in false detail/moiré/striped patterns in the displayed image due to improper filtering of high spatial frequencies contained in the original image. 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 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. When reproduced correctly with a non- pixel- based screen in theory, any image would not become pixelized with lower and lower resolution, but only less and less sharp. Watch Aquamarine Online Fandango. Which leads to the second type. The second type is more precisely called "imaging", at least in the audio domain, however misleadingly often enough called aliasing as well (even in technical literature), and refers to the high frequencies introduced by the nowadays pixel- based display of images.

The individual pixels which in theory are only supposed to serve as individual samples for an entirely analog reconstruction, just like with audio, by their nature, when used "as is", have sharp discreet edges which equal high spatial frequencies (which couldn't have been present in the analog original in the first place as they would have been filtered before the A/D- process takes place), leading to a "pixelized" look if inside the visible bandwidth. This second type of aliasing (imaging) can be defeated in two ways: one can use a pixel- based resolution which depending on the distance and eyesight of the user, is high enough so that the eyes and their optical system serve as a low- pass filter (which already happens with 2.

K in many environments) or secondly, one could correctly filter the high spatial frequencies (anti- imaging, analog to the audio domain again) by either using other techniques than a pixel- based screen (CRT for example) or applying an optical filter in addition between the screen and the user. In this context, raising the display resolution as mentioned before introduces two advantages in practise, where pixel- based displays and non- perfect downscaling probably will continue to persist: when downscaling without proper filtering, the higher end- resolution of the display allows more "headroom", where less aliasing will occur because the false frequencies will be "mirrored back" into the regular bandwidth at a later point, becoming eligible or less apparent at least.

Secondly, the higher the display resolution, the higher the high spatial frequencies will be as well, which are introduced by the pixel- based rasterizarion. Compared to the audio domain, it is essentially noise shaping.

The World's Most Wearable HD Video Camera. Who are you and what is your role at Narrative? My name is Elisabet Stigård, and I’ve been working at Narrative since the fall of 2. I joined the company when our office was in a small apartment in the Old Town of Stockholm. A lot of things have happened since then. We have grown from 1.

U. S. and have announced that we are going to release Narrative Clip 2. Exciting times! In my spare time I enjoy to travel (especially going on weekend trips to other cities or sunbathing on a nice beach), spending time with friends and family and horseback riding. Stockholm is a great city to live in, where you actually get the opportunity to live in a vibrant city but at the same time being really close to nature. How do you use your Narrative Clip? I use the Clip when I am travelling and when I am participating in activities that keep my hands full, like playing sports. My husband and I recently drove along the California coast on Highway 1 and being able to capture parts of the trip, without interrupting the moment was really cool. The Clip is very light which makes it easy to wear, and I have managed to captured several precious moments I otherwise would have forgotten.

What do you see is the major improvements from Narrative Clip to Clip 2? Out of all of the amazing improvements, my two favorites are definitely the improved connectivity options (Wi- Fi & Bluetooth) and being able to switch out the clip. Since I bring the Clip with me on travels, I will now be able to share pictures with friends and family more easily, instead of having to first connect to my laptop. I’ve also had some difficulties when trying to attach the current Clip to a horse halter, so I look forward to having the versatile mounts.

How will you use Clip 2? I see myself using Clip 2 more regularly than the original Clip thanks to the improved connectivity, which makes it easier to upload and share pictures.

I look forward to being able to quickly share what the Clip captured with family and friends. How does your daily work create value for Clip 2 users? At Narrative I am responsible for the Narrative Care Team. Our focus is to support users through embedded self- service but also through personal assistance.

We consider the Care Team to be a driver of users’ engagement, making sure that our users’ feedback is being taken into account when we develop the Narrative Experience. Cornerstones of good customer care lies in being available, keeping promises, getting back in due time and having a team of truly service- minded people. One of our most popular contact channels is Twitter, if you haven’t already, please check out @Narrative. Care. I love being a part of building Narrative into a loved company by users, employees and partners. What expectations do you have on Narrative Clip 2? What do you think is most exciting about it? I am certain that Clip 2 will make it easier and faster to share the Narrative Experience regardless of where I happen to be.

I can’t help but reiterate how great the improved connectivity is! My favorite Clip 1 photo. One of my favorite Clip pictures is from last spring when a bird flies over the beautiful square outside of the Blue Mosque in Istanbul. I believe it captures that you never know in advance if a moment captured will be meaningful to you in the long- run.