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The pillarbox effect occurs in widescreen video displays when black bars (mattes or masking) are placed on the sides of the image. It becomes necessary when film or video that was not originally designed for widescreen is shown on a widescreen display, or a narrower widescreen image is displayed within a wider aspect ratio , such as a 16:9 ...
An extended version of SMPTE Color Bars signal, developed by the Japanese Association of Radio Industries and Businesses as ARIB STD-B28 and standardized as SMPTE RP 219:2002 [15] (High-Definition, Standard-Definition Compatible Color Bar Signal) was introduced to test HDTV signal with an aspect ratio of 16:9 that can be down converted to a ...
[3] [4] The name "Letterboxd" is an allusion to letterboxing, the practice of placing black bars on the edges of a screen to preserve a movie's original aspect ratio. [5] Buchanan and von Randow launched an invitation-only beta version on 24 April 2012 [ 6 ] [ 7 ] and opened the site to the general public on 8 February 2013. [ 8 ]
The term "SmileBox" is a registered trademark [4] used to describe a type of letter-boxing for Cinerama films, such as on the Blu-ray release of How the West Was Won.The image is produced by using a map projection-like technique to approximate how the picture might look if projected onto a curved Cinerama screen.
Censor bars are typically used for satire, [3] [4] although they remain in contemporary use to address privacy concerns. Censor bars are also used in art forms such as blackout poetry . Censor bars may also have the words 'censored', 'redacted', 'private information', 'sensitive information', etc. to indicate their presence.
EBU 100/0/100/0 Colour Bars Displayed colours are only approximate due to different transfer and colour spaces used on web pages and video (BT.601 or BT.709). An alternate form of colour bars is the 100% Colour Bars or EBU 100/0/100/0 Colour Bars pattern (specified in ITU-R Rec. BT.1729 [8]), also known as the RGB pattern or full field bars, which consists of eight vertical bars of 100% ...
It must be noted that not all systems using 16-bit color depth employ the 16-bit, 32-64-32 level RGB palette. Platforms like the Sharp X68000 home computer or the Neo Geo video game console employs the 15-bit RGB palette (5 bits are used for red, green, and blue), but the last bit specifies a less significant intensity or luminance.
Raster bars and similar effects (e.g. having a HUD that uses a different set of colours than does the playing area) are achieved by changing the entries in the CLUT at specific times while the screen is being drawn (originally by the electron beam), in order to display a different set of colours in the subsequent portion of the screen.