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Please use this identifier to cite or link to this item:
http://hdl.handle.net/2074/802
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Full metadata record
| DC Field | Value | Language |
|---|
| contributor.author | Unnikrishnan, G | - |
| contributor.author | Joseph, Joby | - |
| contributor.author | Singh, K | - |
| date.accessioned | 2005-09-01T13:11:55Z | - |
| date.available | 2005-09-01T13:11:55Z | - |
| date.issued | 1999 | - |
| identifier.citation | Optics Communications, 171(1-3), 149–158 | en |
| identifier.uri | http://eprint.iitd.ac.in/dspace/handle/2074/802 | - |
| description.abstract | We propose a space-variant correlator using a joint transform correlator JTC architecture. The reference and target
images of a JTC are modulated by a random phase function which is the sample of a stationary white process ergodic in
mean and variance. The degree of shift-variance can be varied by changing the variance of the random phase function. The
joint power spectrum JPS is a sinusoidally varying function with a spatially nonvarying average value. This property is
advantageous in optical implementations when the JPS is captured by devices such as CCD with a limited dynamic range. The zero-order and the correlations approach delta functions in the correlation plane. By subtracting a constant value equal to its spatial average from the JPS, the undesirable zero-order can be eliminated. | en |
| format.extent | 1744499 bytes | - |
| format.mimetype | application/pdf | - |
| language.iso | en | en |
| subject | Optical pattern recognition | en |
| subject | Joint-transform correlator | en |
| subject | Space-variant pattern recognition | en |
| title | A non-zero order joint transform correlator for space-variant pattern recognition | en |
| type | Article | en |
| Appears in Collections: | Physics
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| unninon1999.pdf | | 1703Kb | Adobe PDF | View/Open |
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