Self-calibration of a camera from video of a walking human

Analysis of human activity from a video camera is simplified by the knowledge of the camera's intrinsic and extrinsic parameters. We describe a technique to estimate such parameters from image observations without requiring measurements of scene objects. We first develop a general technique for...

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Bibliographic Details
Main Authors: Fengjun Lv, Tao Zhao, Nevatia, R.
Format: Conference Proceeding
Language:English
Subjects:
Calibration
Cameras
Carbon capture and storage
Charge-coupled image sensors
Humans
Intelligent robots
Intelligent systems
Layout
Legged locomotion
Robot vision systems
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Description
Summary:Analysis of human activity from a video camera is simplified by the knowledge of the camera's intrinsic and extrinsic parameters. We describe a technique to estimate such parameters from image observations without requiring measurements of scene objects. We first develop a general technique for calibration using vanishing points and vanishing line. We then describe a method for estimating the needed points and line by observing the motion of a human in the scene. Experimental results, including error estimates, are presented.
ISSN:1051-4651
2831-7475
DOI:10.1109/ICPR.2002.1044793