"Chroma key" or "Green screen""Blue screen" is a technique for composing (layering) two or more image or video streams together based on color hues (chroma range). The technique has been heavily used in many fields to remove a background from the subject of a photo or video, particularly the news casting, motion picture and videogame industries. A color range in the top layer is made transparent, revealing another image behind. br br Have a look at a simple video-example. It’ll take less than 10 minutes to make it:).br br Learn more here br But Be careful! Our Art is Obsessive!br www.ukietech.