Zoom Tracking
.
Zoom Tracking.
In ICRA, 2783-2788, 1998
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Abstract
In this paper we present a new active vision technique called zoom tracking. Zoom tracking is the continuous adjustment of a camera's focal length, to keep a constant sized image of an object moving along the camera's optical axis. Two methods for performing zoom tracking are presented: a closed-loop visual feedback algorithm based on optical low, and use of depth information obtained from an autofocus camera's range sensor We show that the image stability provided by zoom tracking improves the performance of algorithms that are scale variant, such as correlation-based trackers. While zoom tracking cannot totally compensate an object's motion, due to the effect of perspective distortion, an analysis of this distortion provides a quantitative estimate of the performance of zoom tracking.
Co-authors
Bibtex Entry
@inproceedings{FaymanSR98i,
title = {Zoom Tracking.},
author = {Jeffrey A. Fayman and Oded Sudarsky and Ehud Rivlin},
year = {1998},
booktitle = {ICRA},
pages = {2783-2788},
abstract = {In this paper we present a new active vision technique called zoom tracking. Zoom tracking is the continuous adjustment of a camera's focal length, to keep a constant sized image of an object moving along the camera's optical axis. Two methods for performing zoom tracking are presented: a closed-loop visual feedback algorithm based on optical low, and use of depth information obtained from an autofocus camera's range sensor We show that the image stability provided by zoom tracking improves the performance of algorithms that are scale variant, such as correlation-based trackers. While zoom tracking cannot totally compensate an object's motion, due to the effect of perspective distortion, an analysis of this distortion provides a quantitative estimate of the performance of zoom tracking.}
}