Green screen Hollywood technology, a. K. A chroma key is a technique used by filmmakers to mix 2 separate pictures together. This works by making the background ( a solid color which is usually green or blue ) clear in order to show another image which is the particular background that'll be shown on film. This strategy of filming is a. K. A color keying, blue screen, and color separation overlay ( CSO ). It was primarily used for weather reports. Forecasters were shot in front of chroma key screens and the background was replaced by actual maps that indicate weather predictions. The chroma key strategy is also used by filmmakers and photographers alike.
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