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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10.4. Vision-Based Interfaces
Vision supports a wide range of human tasks, including recognition, navigation, balance, reading, and communication. In the context of perceptual interfaces, the primary task of computer vision is to detect and recognize meaningful visual cues to communication—that is, to "watch the users" and report on their locations, expressions, gestures, and so on. While vision is one of possibly several sources of information about the interaction to be combined multimodally in a perceptual interface, in this section we focus solely on the vision modality. Using computer vision to sense and perceive the user in an HCI context is often called vision-based interaction, or vision-based interfaces (VBI).
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