tar Wars is an American epic space opera franchise, centered on a film series created by George Lucas. It depicts the adventures of characters "A long time ago in a galaxy far, far away". The franchise began in 1977 with the release of the film Star Wars (later subtitled Episode IV: A New Hope in 1981), which became a worldwide pop culture phenomenon. It was followed by two successful sequels The Empire Strikes Back (1980) and Return of the Jedi (1983); these three films constitute the original Star Wars trilogy. A prequel trilogy was released between 1999 and 2005, albeit to mixed reactions from both critics and fans. Another trilogy that continues the story from Return of the Jedi began in 2015 with the release of Star Wars: The Force Awakens. The first eight films were nominated for Academy Awards (with wins going to the first two films released) and have been commercial successes, with a combined box office revenue of over US$8.5 billion, making Star Wars the second highest-grossing film series. Spin-off cinematic films include Rogue One (2016) and Solo: A Star Wars Story (2018).
Chroma key compositing, or chroma keying, is a special effects / post-production technique for compositing (layering) two images or video streams together based on color hues (chroma range). The technique has been used heavily in many fields to remove a background from the subject of a photo or video – particularly the newscasting, motion picture and videogame industries. A color 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 color keying, colour-separation overlay (CSO; primarily by the BBC), or by various terms for specific color-related variants such as green screen, and blue screen – chroma keying can be done with backgrounds of any color that are uniform and distinct, but green and blue backgrounds are more commonly used because they differ most distinctly in hue from most human skin colors. No part of the subject being filmed or photographed may duplicate the color used as the backing.
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