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Motion Blur
•Synthesize the illusion that objects in our scene are moving quickly by blurring the image along the path of motion.
(demo: creating keyframes)
(demo: motion blur .fli)
Accomplished by interpolating between keyframes, meaning you define certain positions at certain times, and for times in between you calculate the position and direction of motion.
Multiple images at different sample times are blurred (using the accumulation buffer), creating the illusion of motion.