History of Bluescreen

	Revision 5 . . November 21, 2001 7:08 pm by The Anome [*Mentioned core principle of Ultimatte]
	Revision 4 . . (edit) October 31, 2001 10:33 am by Stephen Gilbert

---

Difference (from prior major revision) (no other diffs)

Changed: 1c1

Bluescreen is the film technique of shooting foreground action against a blue (or sometimes green, in which case the term is 'greenscreen') background, which is then replaced by a separately shot 'background plate' scene by either [optical effects]? or digital compositing.

Bluescreen is the film technique of shooting foreground action against a blue (or sometimes green, in which case the term is 'greenscreen') background, which is then replaced by a separately shot 'background plate' scene by either [optical effects]? or digital compositing.

Changed: 3c3

[Petro Vlahos]? was awarded an Academy Award for his development of bluescreen techniques.

[Petro Vlahos]? was awarded an Academy Award for his development of bluescreen techniques. His technique exploits the fact that most objects in real-world scenes have a colour whose blue colour component is similar in intensity to their green colour component.

Added: 5a6