A COMPARISON AND EVALUATION OF MOTION INDEXING ...
A COMPARISON AND EVALUATION OF MOTION INDEXING ...
A COMPARISON AND EVALUATION OF MOTION INDEXING ...
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ferent areas. Following are the reasons whch are responsible for popularity of motion<br />
capture:<br />
1. Impractical or dangerous situations in real life can be simulated very easily with<br />
motion capture.<br />
2. Scenes which involve lots of resources and are expensive to perform can be done<br />
easily with mocap.<br />
3. Realistic human movements and interactions, weight and exchange of forces<br />
which might be complex to generate can be created in a accurate manner using<br />
mocap.<br />
4. It reduces the time of animation compared to keyframing and hence its gaining<br />
more popularity in entertainment industry.<br />
5. Mocap can be cost and time effective as large amounts of animation data can<br />
be produced within a given time when compared to traditional animation tech-<br />
niques.<br />
6. Mocap is very useful in medical science as it provides a realistic movement or<br />
reactions of a patient. Virtual surgery, diagnosis, and other innovations in the<br />
medical field can rely on mocap.<br />
B.2.2 How is it done?<br />
Motion capture using optical systems is performed in the following steps:<br />
• Studio set-up: A capture room is set usually using 8 cameras and can go up to<br />
24 cameras for multiple captures.<br />
• Camera Calibration: Cameras are calibrated to provide overlapping projections.<br />
An initial estimation about the relative position and orientation of the cameras<br />
is made and then iteratively refined until convergence is achieved.<br />
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