
Proceedings Paper
FPGA acceleration of superresolution algorithms for embedded processing in millimeter-wave sensorsFormat | Member Price | Non-Member Price |
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Paper Abstract
Superresolution reconstruction (SR-REC) algorithms combine multiple frames captured using spatially under-sampled
imagers to produce a single higher-resolution image. Sub-pixel information is gained from natural motion within the
image instead of active pixel scanning (dithering/micro-scanning), eliminating the reliability issues and power
consumption associated with moving parts. One of the major computational challenges associated with SR-REC
methods is the estimation of the optical flow of the image (i.e., determining the unknown pixel shifts between
consecutive frames). A linear least squares approximation is the simplest method for estimating the pixel movements
from the captured data, but the size of the problem (directly proportional to the number of pixels in the image) creates a
computational bottleneck, which in turn limits the usability of this algorithm in real-time portable systems. We propose
the use of a reconfigurable platform to implement these computations in a low power/size environment, suitable for integration into portable millimeter wave imagers.
Paper Details
Date Published: 1 May 2007
PDF: 10 pages
Proc. SPIE 6548, Passive Millimeter-Wave Imaging Technology X, 65480K (1 May 2007); doi: 10.1117/12.719694
Published in SPIE Proceedings Vol. 6548:
Passive Millimeter-Wave Imaging Technology X
Roger Appleby; David A. Wikner, Editor(s)
PDF: 10 pages
Proc. SPIE 6548, Passive Millimeter-Wave Imaging Technology X, 65480K (1 May 2007); doi: 10.1117/12.719694
Show Author Affiliations
Fernando E. Ortiz, EM Photonics, Inc. (United States)
Eric J. Kelmelis, EM Photonics, Inc. (United States)
Eric J. Kelmelis, EM Photonics, Inc. (United States)
James P. Durbano, EM Photonics, Inc. (United States)
Dennis W. Prather, Univ. of Delaware (United States)
Dennis W. Prather, Univ. of Delaware (United States)
Published in SPIE Proceedings Vol. 6548:
Passive Millimeter-Wave Imaging Technology X
Roger Appleby; David A. Wikner, Editor(s)
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