Also found in: Dictionary, Thesaurus, Medical, Financial, Acronyms, Wikipedia.


(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 ?
In the ensuing HDR Photo Merge Preview dialogue box, you want Auto Align checked so any subtle shift in exposure will be corrected.
Sports hub on DISH channel 147: In addition to live Olympic coverage on local NBC channels, DISH will offer a sports hub for easy navigation of NBCUniversal coverage across NBCSN, USA Network, CNBC, the Olympic Channel: Home of Team USA and DISH channel 540 featuring NBCUniversal's 4K HDR coverage of the Olympic Winter Games.
Support for HDR Pro means the television can read the HDR content, but it can't play the same on the screen.
9679; HDR Denoise helps reduce any digital noise or distortions for clear and sharp looking images.
In the present study, we identified a nonsense mutation in GATA3 [sup][6] in a hearing impaired Chinese family with various clinical features of HDR syndrome by using targeted capture and next-generation sequencing (NGS).
The International Telecommunication Union (ITU) ratified its standard for working with HDR in July in a move that will accelerate broadcaster UHD services globally.
The hope is that HDR can help staunch the double-digit declines across disc sales and rentals in 2014, according to trade org Digital Entertainment Group.
The ProCamera 8 + HDR has an intuitive interface that enables users to adjust focus and control exposure with simple screen swipes--its functionality rivals that of my Nikon 7000 DSLR camera.
In the second road race, over a 46-mile course, Geoff Martin the highest HDR finisher in seventh place - adding more points to his British Cycling race licence.
This latest series of over-the-air tests confirms that Technicolor's HDR video solutions support broadcast at HD and 4K resolutions, as well as for standard dynamic range and mobile devices, presenting a whole new world of opportunities for broadcasters.
TMK joins the HDR family with nearly 200 employees located in offices in Berlin, Dortmund, Duesseldorf, Erfurt, Kiel, and Leipzig, Germany.
This means that full HDR video content can now be encoded and streamed directly to remote displays, including mobile devices, or sent for storage back at home-base.