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Proceedings Paper

Electronic pan/tilt/zoom camera system
Author(s): Steven D. Zimmermann
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Paper Abstract

A patented camera system for omnidirectional image viewing applications that provides pan, tilt, zoom, and rotational orientation within a hemispherical field-of-view utilizing no moving parts has been developed. The imaging device is based on the effect that the image from a fisheye lens, which produces a circular image of an entire hemispherical field-of-view, can be mathematically corrected using high speed electronic circuitry. More specifically, an incoming fisheye image from any image acquisition source is capture in memory of the device, a transformation is performed for the viewing region-of-interest and viewing direction, and a corrected image is output as a video image signal for viewing, recording, or analysis. As a result, this device can accomplish the functions of pan, tilt, rotation, and zoom throughout a hemispherical field-of-view without the need for any mechanical mechanisms. A programmable transformation process provides flexible control over viewing situations. Multiple images, each with different image magnifications and pin-tilt-rotate parameters, can be obtained from a single camera.

Paper Details

Date Published: 15 November 1993
PDF: 10 pages
Proc. SPIE 1952, Surveillance Technologies and Imaging Components, (15 November 1993); doi: 10.1117/12.161401
Show Author Affiliations
Steven D. Zimmermann, TeleRobotics International, Inc. (United States)


Published in SPIE Proceedings Vol. 1952:
Surveillance Technologies and Imaging Components
Sankaran Gowrinathan; C. Bruce Johnson; James F. Shanley, Editor(s)

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