Dear Amy: How exactly do filmmakers incorporate CG animations with live footage? — Marc, Fyzabad, Trinidad and Tobago
Dear Marc: Special effects in movies are truly amazing, thanks to computer graphics. Characters can be transported to almost any location with the help of chroma keying, also known as blue screening. Actors are filmed in front of a solid blue or green background, then film-editing software removes the background. The new background can be other film footage or even an animated fantasy world. Animators can also add 2D or 3D animations, created frame-by-frame, to match the film. Computer software then combines the animations with the film’s live footage. To learn more, visit entertainment.howstuffworks.com/computer-animation5.htm/printable.
Dear Amy: What is an operating system? — Lief, Bloomington, Minn.
Dear Lief: “Operating system” refers to the software that manages a computer’s operations, including memory, processes, software and hardware. Microsoft Windows, Apple Mac OS X and Linux are all common operating systems. Go to gcflearnfree.org/computerbasics/2 to find out more.
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