Changes

==Overview==

==Overview==

Chroma Key (commonly referred to as "Greenscreen" or "Bluescreen") is the process of layering videos by removing a colored background in a video. This method is used frequently for special effects in feature films, but also on a day to day basis in television studios, to see meteorologists along with weather information.

Chroma Key (commonly referred to as "Greenscreen" or "Bluescreen") is the process of layering videos by removing a colored background in a video. This method is used frequently for special effects in feature films, but also on a day to day basis in television studios, to see meteorologists along with weather information, or other small scale uses.

==Digital Keying==

==Digital Keying==

In recent years, most all Chroma Key work has been done digitally, by using computers to remove pixels of the exact color of the background. Computers that can process these images live enable television studios to use the map underlay features in a live news broadcast.

In recent years, most all Chroma Key work has been done digitally, by using computers to remove pixels of the exact color of the background. Computers that process these images in real time enable television studios to underlay images, such as weather maps, during a live news broadcast.

==Film Methods==

==Film Methods==

The early concept of Chroma Key was accomplished by different methods of chemically processing the film to render the background transparent.

The early concept of Chroma Key was accomplished by different methods of chemically processing the film to render the background transparent.

[[category:media]]

[[category:media]]