Content deleted Content added
GreenC bot (talk | contribs) Rescued 1 archive link; reformat 1 link. Wayback Medic 2.5 per Category:All articles with dead external links - pass 5 |
Added links not anything else. |
||
Line 102:
Although many manufacturers claim very high numbers, [[plasma displays]], [[liquid-crystal display]]s, and [[CRT display]]s can deliver only a fraction of the contrast ratio found in the real world, and these are usually measured under ideal conditions.{{Citation needed|date=February 2015}} The simultaneous contrast of real content under normal viewing conditions is significantly lower.
Some increase in dynamic range in [[LCD monitors]] can be achieved by automatically reducing the backlight for dark scenes. For example, LG calls this technology "Digital Fine Contrast";<ref>[http://www.lge.com/about/press_release/detail/PRO%7CNEWS%5EPRE%7CMENU_20075_PRE%7CMENU.jhtml Digital Fine Contrast]</ref> Samsung describes it as "dynamic contrast ratio". Another technique is to have an array of brighter and darker LED backlights, for example with systems developed by BrightSide Technologies.<ref>[http://www.dolby.com/promo/hdr/technology.html BrightSide Technologies is now part of Dolby -] {{webarchive|url=https://web.archive.org/web/20070910145331/http://www.dolby.com/promo/hdr/technology.html |date=2007-09-10 }}</ref>
[[OLED]] displays have better dynamic range capabilities than LCDs, similar to plasma but with lower power consumption. [[Rec. 709]] defines the color space for [[HDTV]], and [[Rec. 2020]] defines a larger but still incomplete color space for [[ultra-high-definition television]].
Line 133:
===Development of HDRR through DirectX===
Complex shader effects began their days with the release of [[Shader|Shader Model 1.0]] with [[DirectX]] 8. Shader Model 1.0 illuminated 3D worlds with what is called standard lighting. Standard lighting, however, had two problems:
#Lighting precision was confined to 8 bit integers, which limited the contrast ratio to 256:1. Using the [[HSV color space|HVS color model]], the value (V), or brightness of a color has a range of 0 – 255. This means the brightest white (a value of 255) is only 255 levels brighter than the darkest shade above pure black (i.e.: value of 0).
| |||