Technologies
Chroma Key
Also Known As Blue screen or green screen
Broadcast
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Chroma key, commonly known through its blue or green screen backdrop, is a visual effects and post production technique that composites two or more images or video streams together based on colour hues, letting a performer appear to be anywhere at all without leaving the studio. The bluescreen method traces to 1930s work at RCA, and Larry Butler's bluescreen process for The Thief of Bagdad won the Academy Award for special effects in 1940; Petro Vlahos received his own Academy Award in 1964 for refining the underlying techniques, and American and British television networks began switching to green backdrops in the early 1970s. Chroma key work remains commonplace in filmmaking and video games, and is the standard technique behind live television weather forecasts.
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1. Wikipedia
Wikimedia FoundationChroma key, Development and Contemporary Uses sectionsView the Source 1. Wikipedia
Wikimedia FoundationChroma key, Development section, Thief of Bagdad Academy AwardView the Source 1. Wikipedia
Wikimedia FoundationWikipedia: Chroma key, Terminology sectionQuote, Wikipedia: Chroma key, Terminology section
also referred to as colour keying or colour separation overlay (CSO; primarily by the BBC), or by various terms for specific colour-related variants such as green screen or blue screen
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