HDR

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HDR

(1) (High Data Rate) A CDMA 3G technology from Qualcomm. See Qualcomm HDR.

(2) (High Dynamic Range for TV) A high contrast ratio between the brightest whites and darkest blacks on screen. OLED TVs are known for their high contrast ratio; however, backlight techniques employed on LCD TVs create a higher dynamic range. For example, a common method is "local dimming," in which the light is reduced to the dark pixels in real time. Sony's X-tended Dynamic Range Pro dynamically allocates the unused power for the LEDs behind dark areas to the LEDs behind the bright pixels.

HDR10 Vs. Dolby Vision
HDR10 is part of the Ultra HD Blu-ray standard (4K Blu-ray). HDR10 supports 10-bit pixels, which means 1,024 shades for each red, green and blue subpixel (one billion colors). Dolby Vision films are mastered in 12-bit color (4,096 shades and 68 billion colors), and high-end Dolby Vision TVs support HDR10 as well. In addition, HDR10 content is mastered with up to 1,000 nits of brightness, whereas Dolby Vision supports 10,000 nits, although most displays cannot handle more than 4,000.

Both HDR10 and Dolby Vision use meta-data that HDR-capable sets interpret but non-HDR TVs ignore. However, HDR10 meta-data affects the overall content, whereas Dolby Vision meta-data can change from scene to scene. See contrast ratio, LED TV, Dolby HDR, OLED, binary values and nit.

(3) (High Dynamic Range for photos) A photographic technique in which several shots are taken of the same high-contrast scene at different exposures. Highlights from the underexposed images and shadows from the overexposed frames are blended together to create a more natural look. See bracketing.


HDR for Photos
This image was produced in HDRSoft's Photomatix Pro, which blended the three exposures (top) into the composite (bottom) and applied "tone mapping" to enhance details in the highlights and shadows. (Image courtesy of Jacques Joffre, HDRSoft, www.hdrsoft.com)
References in periodicals archive ?
High dynamic range (HDR) imaging is the latest stage in the effort to teach machines to see as well as humans, particularly in the wide range of lighting levels.
It features an extended high dynamic range of up to 154dB in every single frame at a full frame speed of 60fps.
This guide to high dynamic range (HDR) digital photography is not for newcomers; the most appropriate readers will be advanced or professional at using digital cameras and Adobe editing software including Photoshop.
It features ultra-wide bandwidth, low loss, high isolation, low noise, and high dynamic range.
April 13, 2015 /PRNewswire/ -- Technicolor(Euronext Paris: TCH; OTCQX: TCLRY) today announced it will further support content creators in the transition to next generation video technology by expanding its color grading service offering to include high dynamic range (HDR) grading for movies, TV shows and commercials.
A multi-shot technique for digtally capturing, storing and editing the full luminosity range of an image, high dynamic range imaging (HDRI) can frustrate and challenge those not already familiar with it.
High Dynamic Range Imaging (HDRI) is a method used to digitally capture and edit all light in a scene; this handbook gives the information needed to become creative with HDRI.
High Dynamic Range (HDR) is an imaging technology that allows greater dynamic range than standard images.
1] Blu-ray Disc(TM) playback technology supporting the latest technologies such as 4K and High Dynamic Range, which are expected to be adopted in the next generation Blu-ray Disc standards[sup.
The SPCM-UV offers low dark counts down to <25 cps and the lowest dead time on the market, leading to high dynamic range of >25 Mcps.
There are two versions C high dynamic range and high sensitivity.
At SMPTE 2014, Colorfront will show OSD Transkoder 2014 running on cost-effective Supermicro, HP Z840 and new Mac Pro platforms, performing the real-time playback of High Dynamic Range 4K, 60FPS UHD material to Sony's new, 65 inch, flagship X950B 4K UHD monitor.

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