Electronic pan/tilt/zoom camera system

Steven D. Zimmermann; H. Lee Martin

doi:10.1117/12.140831

12 February 1993 Electronic pan/tilt/zoom camera system

Steven D. Zimmermann, H. Lee Martin

Proceedings Volume 1763, Airborne Reconnaissance XVI; (1993) https://doi.org/10.1117/12.140831
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

A 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 an image acquisition source is captured 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 processor provides flexible control over viewing situations. Multiple images, each with different image magnifications and pan-tilt-rotate parameters, can be obtained from a single camera. The image transformation device can provide corrected images at frame rates compatible with RS-170 standard video equipment. The device can be used for may applications where a conventional mechanical pan-and-tilt orientation mechanism might be considered including inspection, monitoring, surveillance, and target acquisition. Omniview is ideal for multiple target acquisition and image stabilization in military applications due to its multiple image handling and fast response capabilities.

Citation Download Citation

Steven D. Zimmermann and H. Lee Martin "Electronic pan/tilt/zoom camera system", Proc. SPIE 1763, Airborne Reconnaissance XVI, (12 February 1993); https://doi.org/10.1117/12.140831

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KEYWORDS

Cameras

Imaging systems

Prototyping

Image processing

Photography

Airborne reconnaissance

Image filtering

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