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Super-resolution for flash LADAR data
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Paper Abstract

Flash laser detection and ranging (LADAR) systems are increasingly used in robotics applications for autonomous navigation and obstacle avoidance. Their compact size, high frame rate, wide field of view, and low cost are key advantages over traditional scanning LADAR devices. However, these benefits are achieved at the cost of spatial resolution. Super-resolution enhancement can be applied to improve the resolution of flash LADAR devices, making them ideal for small robotics applications. Previous work by Rosenbush et al. applied the super-resolution algorithm of Vandewalle et al. to flash LADAR data, and observed quantitative improvement in image quality in terms of number of edges detected. This study uses the super-resolution algorithm of Young et al. to enhance the resolution of range data acquired with a SwissRanger SR-3000 flash LADAR camera. To improve the accuracy of sub-pixel shift estimation, a wavelet preprocessing stage was developed and applied to flash LADAR imagery. The authors used the triangle orientation discrimination (TOD) methodology for a subjective evaluation of the performance improvement (measured in terms of probability of target discrimination and subject response times) achieved with super-resolution. Super-resolution of flash LADAR imagery resulted in superior probabilities of target discrimination at the all investigated ranges while reducing subject response times.

Paper Details

Date Published: 22 April 2009
PDF: 12 pages
Proc. SPIE 7300, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XX, 73000B (22 April 2009); doi: 10.1117/12.818801
Show Author Affiliations
Shuowen Hu, Army Research Lab. (United States)
S. Susan Young, Army Research Lab. (United States)
Tsai Hong, National Institute of Standards and Technology (United States)
Joseph P. Reynolds, U.S. Army RDECOM CERDEC NVESD (United States)
Keith Krapels, U.S. Army RDECOM CERDEC NVESD (United States)
Brian Miller, U.S. Army RDECOM CERDEC NVESD (United States)
Jim Thomas, U.S. Army RDECOM CERDEC NVESD (United States)
Oanh Nguyen, U.S. Army RDECOM CERDEC NVESD (United States)

Published in SPIE Proceedings Vol. 7300:
Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XX
Gerald C. Holst, Editor(s)

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