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Censor bars, also known as black bars, are a basic form of text, photography, and video censorship in which "sensitive" information or images are occluded by black, gray, or white rectangular boxes. These bars have been used to censor various parts of images. [1][2] Since the creation of digital editing software which can apply less obtrusive ...
SMPTE ECR 1-1978 (SDTV) In a SMPTE color bar image, the top two-thirds of the television picture contain seven vertical bars of 75% intensity. In order from left to right, the colors are white or gray, yellow, cyan, green, magenta, red, and blue. [18] The choice of white or gray depends on whether that bar's luminance is 100% or not.
Black tar heroin. Black tar heroin, also known as black dragon, is a form of heroin that is sticky like tar or hard like coal. Its dark color is the result of crude processing methods that leave behind impurities. Despite its name, black tar heroin can also be dark orange or dark brown in appearance. [1]
A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called barcode readers, of which ...
Formation signs at the division level were first introduced in the British Army in the First World War. They were intended (initially) as a security measure to avoid displaying the division's designation in the clear. They were used on vehicles, sign posts and notice boards and were increasingly, but not universally, worn on uniform as the War ...
A foreign forced laborer would not have a blue bar (as their impressment was for the duration of the war), but might have a different coloured bar if they were drawn from another pool of inmates. A Jehovah's Witness would have a purple bar. A homosexual or sex offender would have a pink bar. An asocial would have a black bar.
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Pillarbox. Pillarboxed image, picture taken at 4:3 aspect ratio and displayed on a 16:9 monitor. 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 ...