How The put their charecharacter in virtual World?
Chroma keying , is a visual 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 news casting, motion picture and video game industries.
It is commonly used for weather forecast broadcasts, where in a news presenter is usually seen standing in front of a large CGI map during live television news casts , though in actuality it is a large blue or green background. When using a blue screen, different weather maps are added on the parts of the image where the color is blue. If the news presenter wears blue clothes, his or her clothes will also be replaced with the background video
In the 1920s, Walt Disney used a white backdrop to include human actors with cartoon characters and backgrounds in his Alice Comedies.
In order to create an illusion that characters and objects filmed are present in the intended background scene, the lighting in the two scenes must be a reasonable match. For outdoor scenes, overcast days create a diffuse, evenly colored light which can be easier to match in the studio, whereas direct sunlight needs to be matched in both direction and overall color based on time of day.
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