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"People ask me how I do research for my science fiction. The answer is, I never do any research. I just enjoy reading the stuff, and some of it sticks in my mind and fits into the stories."
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![]() Yes, they have these in the real world, but what happens when they are cheap enough so anyone can play with them? Computers once cost millions of dollars each, but when they were cheap enough to put one on your desk at home, many other uses surfaced.
Most of us collect something about ourselves, whether it is pictures of our families, bronzed baby shoes, or other objects. But collecting data about how your body moves in space - that's different. "Motion capture" is defined as the recording of body movement for later analysis. The information gathered can be as simple as a small set at points in space representing wrist, elbow, shoulder points, etc. Or, very complex structures like the changing expressions on a person's face, requiring hundreds of datapoints for a very small area, can be captured.
The earliest technology for this purpose, rotoscoping, was used to make Snow White, the Disney animated feature, more compelling. This technique utilized frame-by-frame film of live actors; animators then traced over the frames.
The first motion capture "suits" were electromechanical telefactoring devices; they lead to real-time control of puppets or allowed actors to script movements of computer graphics characters in the 1980's.
Optical tracking of the human body, using small markers at various points on the body, was also used at this time. The person was then filmed, and then the datapoints gathered from the film.
Take a look at a brief motion capture suit video to get a good look at how the motion of the suit translates into data usable in real time by a computer graphics program.
Don't miss this fascinating Flash application made from motion capture suit data. For more detailed information about the history of motion capture suits, be sure to see this very nice article A Brief History of Motion Capture for Computer Character Animation.
For a look at the first telefactoring device, see Waldo, from the Robert Heinlein story of the same name. Heinlein invented the term as well as the concept of telefactoring. Comment/Join this discussion ( 1 ) | RSS/XML | Blog This | Additional
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Science Fiction
Timeline
Robotic Barber Programmed With a Number of Styles
'He found a barber shop which, he thought, would be good for an idle hour.'
Humanoid Boxing Robot KO's Opponent - It's A Knockout!
'Thirty rounds of fighting is tough work. Even for machines.'
Caterpillar Electric Mining Loader Not Yet Ready For Moon
'...the excavations were already in progress, for he saw gray slopes of rubble.'
Centipede Robots Down On The Farm
'...the walking mills of Puffy Products began to tread delicately on their centipede legs across the wheat fields of Kansas.'
Anthropic's Claude AI Creates Legal Citation From Whole Cloth
'Here is a Clerk that would work incessantly, and neither eat, sleep, want payment, or grumble.'
Spaceplane From Virgin Atlantic
'ZARNAK, YOU'RE TO COMMAND A SCOUTING EXPEDITION --- FIND OUT WHAT THIS IS ALL ABOUT!'
DARPA Wants 'Large Bio-Mechanical Space Structures'
'These are your rudimentary seed packages... Some will combine in place to form more complicated structures.'
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