Interferometric sinograms of transparent objects with stepping wise shifted Ronchi ruling for optical tomography
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| Format: | Artículo científico |
| Langue: | en |
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Sociedad Mexicana de Física A.C.
2005
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| _version_ | 1876435698252251136 |
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| author | C. Meneses-Fabian |
| author_facet | C. Meneses-Fabian |
| contents | Interferometric sinograms of transparent objects with stepping wise shifted Ronchi ruling for optical tomography C. Meneses-Fabian G. Rodríguez-Zurita V. Arrizón Física, Astronomía y Matemáticas tomography Fourier optics interferometers Image reconstruction An experimental set-up to achieve tomographic images of slices belonging to transparent objects is presented. The proposed system isbased on an interferometer which employs two windows in the object plane and a translating absorptive grating (Ronchi ruling) in thefrequency plane. In the image plane, replicated windows can be brought to superposition by proper adjustment of the windows spacingand the grating period. After adaptation of this interferometer to tomographic measurements, the phase of the projections result encodedas interference fringes, thereby forming a composite interference pattern in the plane of the corresponding sinogram (interfero-sinograms).Using phase-stepping techniques, four phase-shifted interfero-sinograms are found after proper translation of the grating. Then wrapped aand unwrapped phase is extracted as a conventional interferogram to obtain a sinogram to be subjected to a filtered backprojection algorithmfor reconstruction. As experimental results, the reconstructions of some transparent samples are presented. 2005 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57064207 https://www.redalyc.org/journal/570/57064207/ https://www.redalyc.org/journal/570/57064207/html/ https://www.redalyc.org/journal/570/57064207/57064207.epub https://www.redalyc.org/journal/570/57064207/movil en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.6 Vol.51 |
| format | Artículo científico |
| id | redalyc_57064207 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Sociedad Mexicana de Física A.C. |
| spellingShingle | Interferometric sinograms of transparent objects with stepping wise shifted Ronchi ruling for optical tomography C. Meneses-Fabian Física, Astronomía y Matemáticas tomography Fourier optics interferometers Image reconstruction Interferometric sinograms of transparent objects with stepping wise shifted Ronchi ruling for optical tomography C. Meneses-Fabian G. Rodríguez-Zurita V. Arrizón Física, Astronomía y Matemáticas tomography Fourier optics interferometers Image reconstruction An experimental set-up to achieve tomographic images of slices belonging to transparent objects is presented. The proposed system isbased on an interferometer which employs two windows in the object plane and a translating absorptive grating (Ronchi ruling) in thefrequency plane. In the image plane, replicated windows can be brought to superposition by proper adjustment of the windows spacingand the grating period. After adaptation of this interferometer to tomographic measurements, the phase of the projections result encodedas interference fringes, thereby forming a composite interference pattern in the plane of the corresponding sinogram (interfero-sinograms).Using phase-stepping techniques, four phase-shifted interfero-sinograms are found after proper translation of the grating. Then wrapped aand unwrapped phase is extracted as a conventional interferogram to obtain a sinogram to be subjected to a filtered backprojection algorithmfor reconstruction. As experimental results, the reconstructions of some transparent samples are presented. 2005 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57064207 https://www.redalyc.org/journal/570/57064207/ https://www.redalyc.org/journal/570/57064207/html/ https://www.redalyc.org/journal/570/57064207/57064207.epub https://www.redalyc.org/journal/570/57064207/movil en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.6 Vol.51 |
| title | Interferometric sinograms of transparent objects with stepping wise shifted Ronchi ruling for optical tomography |
| topic | Física, Astronomía y Matemáticas tomography Fourier optics interferometers Image reconstruction |
| url | https://www.redalyc.org/articulo.oa?id=57064207 https://www.redalyc.org/journal/570/57064207/ https://www.redalyc.org/journal/570/57064207/html/ https://www.redalyc.org/journal/570/57064207/57064207.epub https://www.redalyc.org/journal/570/57064207/movil |