Abstract
| Original language | English |
|---|---|
| Title of host publication | SPIE proceedings |
| Subtitle of host publication | Optical pattern recognition X |
| Editors | David P. Casasent, Tien-Hsin Chao |
| Place of Publication | Orlando, FL |
| Pages | 185-196 |
| Number of pages | 12 |
| Volume | 3715 |
| DOIs | |
| State | Published - 9 Mar 1999 |
| Event | SPIE's 13th Annual International Symposium on Aerospace/Defense Sensing,Simulation and Controls - Orlando, United States |
Publication series
| Name | SPIE Proceedings |
|---|---|
| Volume | 3715 |
Conference
| Conference | SPIE's 13th Annual International Symposium on Aerospace/Defense Sensing,Simulation and Controls |
|---|---|
| Country | United States |
| City | Orlando |
| Period | 5/04/99 → 9/04/99 |
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Triple joint transform correlator. / Zhang, Hui; Cartwright, Colin M.; Ding, Mei-Song; Gillespie, G. A.
SPIE proceedings: Optical pattern recognition X. ed. / David P. Casasent; Tien-Hsin Chao. Vol. 3715 Orlando, FL, 1999. p. 185-196 (SPIE Proceedings; Vol. 3715).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - CHAP
T1 - Triple joint transform correlator
AU - Zhang,Hui
AU - Cartwright,Colin M.
AU - Ding,Mei-Song
AU - Gillespie,G. A.
PY - 1999/3/9
Y1 - 1999/3/9
N2 - The joint transform correlator (JTC) is a robust architecture for optical object recognition or verification and has been investigated intensively for a number of years. In order to improve its performance digital processing, such as binarization to an appropriate threshold, has been proposed at the recording stage of the joint power spectrum (JPS), this of course to some extent negates the benefits of an optical system. We propose to employ a third beam which is coherent to the beams forming the JPS and is the Fourier transform of an appropriate third input image and thus can be used to modify the JPS so as to implement a phase only filtering action for example. The triple joint transform correlator thus consists of three Fourier spectra incident simultaneously on a photorefractive crystal and can exhibit improved discrimination over the conventional JTC without an intermediate digital processing stage. Computer simulations and experimental results are presented.
AB - The joint transform correlator (JTC) is a robust architecture for optical object recognition or verification and has been investigated intensively for a number of years. In order to improve its performance digital processing, such as binarization to an appropriate threshold, has been proposed at the recording stage of the joint power spectrum (JPS), this of course to some extent negates the benefits of an optical system. We propose to employ a third beam which is coherent to the beams forming the JPS and is the Fourier transform of an appropriate third input image and thus can be used to modify the JPS so as to implement a phase only filtering action for example. The triple joint transform correlator thus consists of three Fourier spectra incident simultaneously on a photorefractive crystal and can exhibit improved discrimination over the conventional JTC without an intermediate digital processing stage. Computer simulations and experimental results are presented.
U2 - 10.1117/12.341300
DO - 10.1117/12.341300
M3 - Conference contribution
VL - 3715
T3 - SPIE Proceedings
SP - 185
EP - 196
BT - SPIE proceedings
ER -