Book contents
- Frontmatter
- Contents
- Foreword: Out of Sight, Out of Mind
- Preface
- Part one New Interfaces and Novel Applications
- Part two Tracking Human Action
- 6 Tracking Faces
- 7 Towards Automated, Real-time, Facial Animation
- 8 Interfacing through Visual Pointers
- 9 Monocular Tracking of the Human Arm in 3D
- 10 Looking at People in Action – An Overview
- Part three Gesture Recognition and Interpretation
- Acknowledgements
- Bibliography
- List of contributors
6 - Tracking Faces
from Part two - Tracking Human Action
Published online by Cambridge University Press: 06 July 2010
- Frontmatter
- Contents
- Foreword: Out of Sight, Out of Mind
- Preface
- Part one New Interfaces and Novel Applications
- Part two Tracking Human Action
- 6 Tracking Faces
- 7 Towards Automated, Real-time, Facial Animation
- 8 Interfacing through Visual Pointers
- 9 Monocular Tracking of the Human Arm in 3D
- 10 Looking at People in Action – An Overview
- Part three Gesture Recognition and Interpretation
- Acknowledgements
- Bibliography
- List of contributors
Summary
Abstract
The ability to track a face in a video stream opens up new possibilities for human computer interaction. Applications range from head gesture-based interfaces for physically handicapped people, to image-driven animated models for low bandwidth video conferencing. Here we present a novel face tracking algorithm which is robust to partial occlusion of the face. Since the tracker is tolerant of noisy, computationally cheap feature detectors, frame-rate operation is comfortably achieved on standard hardware.
Introduction
The ability to detect and track a person's face is potentially very powerful for human-computer interaction. For example, a person's gaze can be used to indicate something, in much the same manner as pointing. One can envisage a window manager which automatically shuffles to the foreground whichever window the user is looking at [153, 152]. Gaze aside, the head position and orientation can be used for virtual holography [14]: as the viewer moves around the screen, the computer displays a different projection of a scene, giving the illusion of holography. Another application lies in low-bandwidth video conferencing: live images of participant's face can be used to guide a remote, synthesised “clone” face which is viewed by other participants [180, 197]. A head tracker could also provide a very useful computer interface for physically handicapped people, some of whom can only communicate using head gestures. With an increasing number of desktop computers being supplied with video cameras and framegrabbers as standard (ostensibly for video mail applications), it is becoming both useful and feasible to track the computer user's face.
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- Information
- Computer Vision for Human-Machine Interaction , pp. 113 - 122Publisher: Cambridge University PressPrint publication year: 1998
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