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Proceedings Paper

A co-boresighted synchronized ladar/EO imager for creating 3D images of dynamic scenes
Author(s): Robert T. Pack; Paul Israelsen; Kylee Sealy
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Paper Abstract

An integrated ladar/EO imager has been developed that synchronizes and aligns CMOS digital camera readouts with the scan motion of a time-of-flight pulsed ladar . A prototype has been developed at the Utah State University Center for Advanced Imaging Ladar that reads out a 13 by 13 patch of RGB pixels within the subtended angle of a single ladar beam footprint. The readout location for the patch is slaved to the ladar and follows the ladar beam as it is scanned within the field-of-view. As the scanning occurs, the x-y-z position of each footprint and associated image patch is determined via the ladar. Multiple patches can then be mosaiked to build up a 3D image composed of 3D texture elements (texels) or 3D splats. Because of its ability to produce texels on-the-fly, the system is called a Texel Camera. The approach precludes mismatched occlusions and other ill-effects when motion occurs in the scene. The existing prototype consists of a single-channel flying-spot ladar running at approximately 470 shots/second and a color imager running at approximately 160 times the shot rate. Other designs are in development that employ line-flash and array flash ladar components that will run at pixel rates up to two orders of magnitude faster. The ability to create high-fidelity combined ladar/EO data sets in real time will be advantageous for time-critical applications such as cruise missile automatic target recognition. The design has the potential for applications in space rendezvous and dock, airborne automatic target recognition, surveillance from a tripod, and others that benefit from real-time 3D imagery creation.

Paper Details

Date Published: 19 May 2005
PDF: 9 pages
Proc. SPIE 5791, Laser Radar Technology and Applications X, (19 May 2005); doi: 10.1117/12.603788
Show Author Affiliations
Robert T. Pack, Utah State Univ. (United States)
Paul Israelsen, Utah State Univ. (United States)
Kylee Sealy, Utah State Univ. (United States)

Published in SPIE Proceedings Vol. 5791:
Laser Radar Technology and Applications X
Gary W. Kamerman, Editor(s)

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