"Green screen" redirects here. For other uses, see Green screen (disambiguation).
For the electronic music project, see Chroma Key. For musical tonality depending on key, see Key (music).
The practicality of green-screen compositing is demonstrated by actor Iman Crosson in a self-produced video. Top panel: A frame in a full-motion video shot in the actor's living room.[1] Bottom panel: The corresponding frame in the final version in which the actor impersonates Barack Obama "appearing" outside the White House's East Room.[2]
Chroma key compositing, or chroma keying, is a visual-effects and post-production technique for compositing (layering) two or more images or video streams together based on colour hues (chroma range). The technique has been used in many fields to remove a background from the subject of a photo or video – particularly the newscasting, motion picture, and video game industries. A colour range in the foreground footage is made transparent, allowing separately filmed background footage or a static image to be inserted into the scene. The chroma keying technique is commonly used in video production and post-production. This technique is also referred to as colour keying, colour-separation overlay (CSO; primarily by the BBC[3]), or by various terms for specific colour-related variants such as green screen or blue screen; chroma keying can be done with backgrounds of any colour that are uniform and distinct, but green and blue backgrounds are more commonly used because they differ most distinctly in hue from any human skin colour. No part of the subject being filmed or photographed may duplicate the colour used as the backing, or the part may be erroneously identified as part of the backing.[4]
It is commonly used for live weather forecast broadcasts in which a news presenter is seen standing in front of a large CGI map which is really a large blue or green background. Using a blue screen, different weather maps are added on the parts of the image in which the colour is blue. If the news presenter wears blue clothes, their clothes will also be replaced with the background video. Chroma keying is also common in the entertainment industry for visual effects in movies and video games. Rotoscopy may instead be carried out on subjects that are not in front of a green (or blue) screen. Motion tracking can also be used in conjunction with chroma keying, such as to move the background as the subject moves.
^From YouTube video "President Obama on Death of Osama SPOOF- BEHIND THE SCENES" posted to Crosson's secondary YouTube channel "Iman" on 8 May 2011.
^The final (composite) video "President Obama on Death of Osama bin Laden (SPOOF)" posted to Crosson's YouTube channel "Alphacat" on 4 May 2011.
^"What is Chroma Key?". Lumeo. Retrieved 3 July 2014.
^Cite error: The named reference BorisFX was invoked but never defined (see the help page).
Chromakey compositing, or chromakeying, is a visual-effects and post-production technique for compositing (layering) two or more images or video streams...
ChromaKey is a band of Kevin Moore, known for his work with the bands OSI and Dream Theater. Although primarily a solo project, several other musicians...
Look up chroma in Wiktionary, the free dictionary. Chroma, which is Greek for color (χρώμα), may refer to: Chrominance or chroma, a component of a television...
Joey Vera (born April 24, 1963) is an American bassist who is known as a member of the heavy metal band Armored Saint and progressive metal band Fates...
26, 1967) is an American keyboardist, composer and the founder of the ChromaKey music project. He is also a former member of the American progressive...
a live-action plate so it may be composited over another background. Chromakey is more often used to achieve the same background replacement effect,...
this is usually to employ a post processed hardware overlay, using chromakeying. After all of the windows have already been drawn, the only pieces of...
same scene. Live-action shooting for compositing is variously called "chromakey", "blue screen", "green screen" and other names. Today, most, though not...
keyframe effects applied to each clip, as well as picture-in-picture and chromakey capabilities. It also supports many third-party plug-ins for additional...
Dream Theater. Moore recorded and released this album under the name ChromaKey. A number of initial pre-orders for the album in the Summer of 2000 were...
software. A common ability is to do compositing techniques such as chromakeying or luma keying, among others, which allow different objects to look as if they...
production designer, overseeing the construction of 12 sets, including chromakey setups, at a warehouse studio. Special properties reflecting mythical...
Mehndi, released in 1998. It was the first Indian music video made using chromakey technology. The song and the video were a success in India, cementing...
Air for Radios studio album by Kevin Moore, under the musical moniker ChromaKey. It was released through Fight Evil Records on December 16, 1998. The...
been frequently re-screened and is notable for its pioneering use of the Chromakey process to simulate the Airplane's psychedelic light show.[citation needed]...
various locations (with frequent background changes accomplished via chromakey), looking for a place where a black man would not be harassed by police...
Color key may refer to: Chromakey composition, a special effects technique layering images or video streams together Colorist work and the materials used...
a live-action plate so it may be composited over another background. Chromakey is more often used for this, as it is faster and requires less work, however...
stopwatch during transition periods and highlighted its topics through chromakey—both techniques are still used. In 1972, the program began airing from...
Producer Joel Silver soon joined the project. Although the project had key supporters, including Silver and Di Bonaventura, to influence the company...
sulfide CCSO Nameserver Colour-separation overlay, an alternative term for chromakey visual processing Combined sewer overflow Composante Spatiale Optique...
shiny armor, are often very difficult to deal with in a conventional chromakey work flow. This technique also minimizes the amount of tedious rotoscoping...
look for the room." Most sets were a combination of practical sets and chromakey backgrounds. For example, in the Glass Stepping Stones scenes, the set...
the group's beginning. Matheos also plays in OSI alongside Kevin Moore (ChromaKey, ex-Dream Theater), as well as making other appearances with many different...
Global Information