
Proceedings Paper
Compact real-time acousto-optic image correlatorFormat | Member Price | Non-Member Price |
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Paper Abstract
The design and development of a compact acousto-optic image correlator capable of
performing real-time correlations on grayscale imagery will be described. The system utilizes
one-dimensional optical devices to perform the desired two-dimensional correlation. The
two-dimensional correlation is performed as a series of multichannel time-integrating
correlations between each input image line and a reference template that is stored in an
electronic memory. The rows of the reference template are introduced into the processor in
parallel using a one-dimensional laser diode array. The correlation in the vertical direction is
performed using a modified charge-coupled device (CCD) operating in the shift-and-add
mode. A laser diode array, as opposed to an LED array used in previous systems, provides
more power so that full use can be made of the dynamic range capabilities of the acoustooptic
device and CCD. Key features of the system will be presented, including the random
access template memory, the custom laser diode array consisting of 64 individually addressed
laser diodes, and the custom optical design to achieve nearly diffraction-limited image quality
and compactness.
Paper Details
Date Published: 27 December 1990
PDF: 8 pages
Proc. SPIE 1347, Optical Information Processing Systems and Architectures II, (27 December 1990); doi: 10.1117/12.23401
Published in SPIE Proceedings Vol. 1347:
Optical Information Processing Systems and Architectures II
Bahram Javidi, Editor(s)
PDF: 8 pages
Proc. SPIE 1347, Optical Information Processing Systems and Architectures II, (27 December 1990); doi: 10.1117/12.23401
Show Author Affiliations
Perry A. Molley, Sandia National Labs. (United States)
K. Terry Stalker, Sandia National Labs. (United States)
K. Terry Stalker, Sandia National Labs. (United States)
William C. Sweatt, Sandia National Labs. (United States)
Published in SPIE Proceedings Vol. 1347:
Optical Information Processing Systems and Architectures II
Bahram Javidi, Editor(s)
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