Nonlinear joint transform correlator using one-dimensional Fourier transformation
Resumen:
We present a new method for processing the data in a nonlinear joint transform correlator (NJTC). The output of the NJTC is obtained after two steps. The first step consists of the acquisition of the joint power spectrum (JPS) of the images to be correlated. The JPS is in principle a bidimensional image. The second step is the calculation of the cross-correlation function. To do this, the JPS image is compressed to one dimension and a 1-D Fourier transform is performed. This significantly reduces the number of operations required to evaluate the cross-correlation. To improve the cross-correlation sensitivity, a degree of nonlinearity is introduced using an illumination level above the saturation threshold of the camera used to acquire the JPS.
| 1998 | |
| TELECOMUNICACIONES | |
| Inglés | |
| Universidad de la República | |
| COLIBRI | |
| https://hdl.handle.net/20.500.12008/20761 | |
| Acceso abierto |
| _version_ | 1807522890715758592 |
|---|---|
| author | Rodríguez Díaz, Benigno |
| author2 | Dubra, A Martínez, Carlos Escuder, Gonzalo Ferrari, José A |
| author2_role | author author author author |
| author_facet | Rodríguez Díaz, Benigno Dubra, A Martínez, Carlos Escuder, Gonzalo Ferrari, José A |
| author_role | author |
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| collection | COLIBRI |
| dc.creator.none.fl_str_mv | Rodríguez Díaz, Benigno Dubra, A Martínez, Carlos Escuder, Gonzalo Ferrari, José A |
| dc.date.accessioned.none.fl_str_mv | 2019-05-29T15:28:09Z |
| dc.date.available.none.fl_str_mv | 2019-05-29T15:28:09Z |
| dc.date.issued.es.fl_str_mv | 1998 |
| dc.date.submitted.es.fl_str_mv | 20190528 |
| dc.description.abstract.none.fl_txt_mv | We present a new method for processing the data in a nonlinear joint transform correlator (NJTC). The output of the NJTC is obtained after two steps. The first step consists of the acquisition of the joint power spectrum (JPS) of the images to be correlated. The JPS is in principle a bidimensional image. The second step is the calculation of the cross-correlation function. To do this, the JPS image is compressed to one dimension and a 1-D Fourier transform is performed. This significantly reduces the number of operations required to evaluate the cross-correlation. To improve the cross-correlation sensitivity, a degree of nonlinearity is introduced using an illumination level above the saturation threshold of the camera used to acquire the JPS. |
| dc.identifier.citation.es.fl_str_mv | Rodríguez Díaz, Benigno, Dubra, A., Martínez, Carlos, Escuder, Gonzalo, Ferrari, José A. Nonlinear joint transform correlator using one-dimensional Fourier transformation [en línea] Optical Engineering, 1998, v. 37, no. 10 |
| dc.identifier.uri.none.fl_str_mv | https://hdl.handle.net/20.500.12008/20761 |
| dc.language.iso.none.fl_str_mv | en eng |
| dc.publisher.es.fl_str_mv | SPIE |
| dc.relation.ispartof.es.fl_str_mv | Optical Engineering, 1998, v. 37, no. 10 |
| dc.rights.none.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.source.none.fl_str_mv | reponame:COLIBRI instname:Universidad de la República instacron:Universidad de la República |
| dc.subject.other.es.fl_str_mv | TELECOMUNICACIONES |
| dc.title.none.fl_str_mv | Nonlinear joint transform correlator using one-dimensional Fourier transformation |
| dc.type.es.fl_str_mv | Artículo |
| dc.type.none.fl_str_mv | info:eu-repo/semantics/article |
| dc.type.version.none.fl_str_mv | info:eu-repo/semantics/publishedVersion |
| description | We present a new method for processing the data in a nonlinear joint transform correlator (NJTC). The output of the NJTC is obtained after two steps. The first step consists of the acquisition of the joint power spectrum (JPS) of the images to be correlated. The JPS is in principle a bidimensional image. The second step is the calculation of the cross-correlation function. To do this, the JPS image is compressed to one dimension and a 1-D Fourier transform is performed. This significantly reduces the number of operations required to evaluate the cross-correlation. To improve the cross-correlation sensitivity, a degree of nonlinearity is introduced using an illumination level above the saturation threshold of the camera used to acquire the JPS. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | COLIBRI_ed0d44ce254168c27a1219db34893d09 |
| identifier_str_mv | Rodríguez Díaz, Benigno, Dubra, A., Martínez, Carlos, Escuder, Gonzalo, Ferrari, José A. Nonlinear joint transform correlator using one-dimensional Fourier transformation [en línea] Optical Engineering, 1998, v. 37, no. 10 |
| instacron_str | Universidad de la República |
| institution | Universidad de la República |
| instname_str | Universidad de la República |
| language | eng |
| language_invalid_str_mv | en |
| network_acronym_str | COLIBRI |
| network_name_str | COLIBRI |
| oai_identifier_str | oai:colibri.udelar.edu.uy:20.500.12008/20761 |
| publishDate | 1998 |
| reponame_str | COLIBRI |
| repository.mail.fl_str_mv | mabel.seroubian@seciu.edu.uy |
| repository.name.fl_str_mv | COLIBRI - Universidad de la República |
| repository_id_str | 4771 |
| spelling | 2019-05-29T15:28:09Z2019-05-29T15:28:09Z199820190528Rodríguez Díaz, Benigno, Dubra, A., Martínez, Carlos, Escuder, Gonzalo, Ferrari, José A. Nonlinear joint transform correlator using one-dimensional Fourier transformation [en línea] Optical Engineering, 1998, v. 37, no. 10https://hdl.handle.net/20.500.12008/20761We present a new method for processing the data in a nonlinear joint transform correlator (NJTC). The output of the NJTC is obtained after two steps. The first step consists of the acquisition of the joint power spectrum (JPS) of the images to be correlated. The JPS is in principle a bidimensional image. The second step is the calculation of the cross-correlation function. To do this, the JPS image is compressed to one dimension and a 1-D Fourier transform is performed. This significantly reduces the number of operations required to evaluate the cross-correlation. To improve the cross-correlation sensitivity, a degree of nonlinearity is introduced using an illumination level above the saturation threshold of the camera used to acquire the JPS.Made available in DSpace on 2019-05-29T15:28:09Z (GMT). No. of bitstreams: 4 license_text: 21936 bytes, checksum: 9833653f73f7853880c94a6fead477b1 (MD5) license_url: 49 bytes, checksum: 4afdbb8c545fd630ea7db775da747b2f (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) license.txt: 4194 bytes, checksum: 7f2e2c17ef6585de66da58d1bfa8b5e1 (MD5) Previous issue date: 1998enengSPIEOptical Engineering, 1998, v. 37, no. 10Las obras depositadas en el Repositorio se rigen por la Ordenanza de los Derechos de la Propiedad Intelectual de la Universidad De La República. (Res. Nº 91 de C.D.C. de 8/III/1994 – D.O. 7/IV/1994) y por la Ordenanza del Repositorio Abierto de la Universidad de la República (Res. Nº 16 de C.D.C. de 07/10/2014)info:eu-repo/semantics/openAccessTELECOMUNICACIONESNonlinear joint transform correlator using one-dimensional Fourier transformationArtículoinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionreponame:COLIBRIinstname:Universidad de la Repúblicainstacron:Universidad de la RepúblicaRodríguez Díaz, BenignoDubra, AMartínez, CarlosEscuder, GonzaloFerrari, José 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- Universidad de la Repúblicafalse |
| spellingShingle | Nonlinear joint transform correlator using one-dimensional Fourier transformation Rodríguez Díaz, Benigno TELECOMUNICACIONES |
| status_str | publishedVersion |
| title | Nonlinear joint transform correlator using one-dimensional Fourier transformation |
| title_full | Nonlinear joint transform correlator using one-dimensional Fourier transformation |
| title_fullStr | Nonlinear joint transform correlator using one-dimensional Fourier transformation |
| title_full_unstemmed | Nonlinear joint transform correlator using one-dimensional Fourier transformation |
| title_short | Nonlinear joint transform correlator using one-dimensional Fourier transformation |
| title_sort | Nonlinear joint transform correlator using one-dimensional Fourier transformation |
| topic | TELECOMUNICACIONES |
| url | https://hdl.handle.net/20.500.12008/20761 |
