Emerging Topics in Computer Vision

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).

In order to accurately ...