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Chapter 10. SELECTING TRANSLUCENCY AND G... > BLUE SCREEN AND GREEN SCREEN TECHNIQ...

BLUE SCREEN AND GREEN SCREEN TECHNIQUES

A local TV weather forecaster, Forrest Gump shaking President Kennedy's hand, and the hordes of warriors in Lord of the Rings: The Return of the King all have one thing in common: Not one of these examples exists as we see them on TV or in the movies, although we like to believe they do.

The weather forecaster is standing in front of a pure blue screen, which is then chroma-keyed out of the scene and replaced with the weather map, making it look as if the weather forecaster is interacting with the image. Have you ever noticed how weather forecasters constantly look off camera as they're pointing at the map? They are actually watching themselves on a monitor to see where they're pointing.


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