July 2004
Intermediate to advanced
688 pages
19h 3m
English
Content preview from Emerging Topics in Computer VisionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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7.6. The Future
Camera tracking and photogrammetry are the main applications of computer vision in visual effects. But new techniques are making it into visual effects all the time.
Space carving techniques are starting to show up in visual effects. In the movie Minority Report, a 3D image of a person was projected in Tom Cruise's apartment. The camera roamed around the projection, and it needed to look like a true 3D display. The projected actor was filmed on a special green-screen stage, surrounded by many synchronized video cameras. Each camera was calibrated and fixed. Since the actor was surrounded by greenscreen, it was relatively simple to determine what part of each image was actor and what was background. From this, a view volume was ...
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