![]() This technique is also referred to as color keying, or by various terms for specific color-related variants such as green screen, and blue screen, because green and blue backgrounds differ most distinctly in hue from most human skin colors." ( from Wikipedia ) What to take to do Chroma Keying? A color range in the top layer is made transparent, revealing another image behind. 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. "Chroma key compositing, or chroma keying, is a special effects / post-production technique for compositing two images or video streams together based on color hues (chroma range).
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