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Posted by in chroma key on Mar 23, 2013 .

 

Definition - What does Chroma Key mean?

 


 

Chroma keying is a technique used for combining two frames or images by replacing a color or a color range in one frame with that from the another frame.

It is often used in film industry to replace a scene's background by using a blue or green screen as the initial background and placing the actor in the foreground. The principle behind chroma keying is that the color blue is the opposite color of skin tone, so a distinction between the two is very clear, making it easier to select the color without worrying about any part of the actor being...

Posted by in chroma key on Mar 24, 2013 .

 

History

Linwood Dunn Began the first use of the chroma key in 1933.Linwood Dunn used an early version of the travelling matte to create "wipes" – where there were transitions like a windshield wiper in films such as Flying Down to Rio  , Working for RKO Pictures.

Dunn designed numerous special effects with his homemade optical printer. The printer consisted of a modified motion picture camera set up on a solid base with a special precision motion picture projector---both driven in synchronization while the camera photographed the film carried in the projector. Through this film-copying process, the image in...