A manipulation of four circles arranged along the Cartesian coordinates in uniform circular aperture is compared with selected four blood cells forming the object using the technique of speckle photography. The aperture model is considered have two- fold symmetry. A diffuser is placed in the same plane of the object or the model of four circles in order to get the modulated speckle pattern which is the Fourier spectrum of object information convoluted with the Fourier spectrum of the random diffuser. The modulated speckle pattern is smeared by the Point Spread Function computed from the diffraction corresponding to the whole circular aperture. The reconstruction process gave nearly similar speckle images little degraded by the noise originated from the diffuser. The Point Spread Function corresponding to the model of four circles is computed analytically and also using the FFT technique. A comparison is made with the Fourier spectrum of the blood cells and its corresponding autocorrelation function giving nearly similar results. We can acquire the erythrocytes blood cells in the imaging plane by operating the FFT upon the modulated speckle images. The reconstructed images of blood cells are affected by the noise originated from the diffuser. A Mat- Lab code is made in the construction of the aperture and all the images computed in the processing.
| DOI | 10.11648/j.ajop.20190703.12 |
| Published in | American Journal of Optics and Photonics (Volume 7, Issue 3, September 2019) |
| Page(s) | 57-62 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Two - Fold Symmetrical Aperture, Model of Four Circles as Aperture, Point Spread Function, Speckle Imaging
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APA Style
Abdallah Mohamed Hamed, Tarek Abd-Elmotelb Al-Saeed. (2019). Comparative Study Between Erythrocytes Blood Cells and Modulated Circular Aperture Using Speckle Photography. American Journal of Optics and Photonics, 7(3), 57-62. https://doi.org/10.11648/j.ajop.20190703.12
ACS Style
Abdallah Mohamed Hamed; Tarek Abd-Elmotelb Al-Saeed. Comparative Study Between Erythrocytes Blood Cells and Modulated Circular Aperture Using Speckle Photography. Am. J. Opt. Photonics 2019, 7(3), 57-62. doi: 10.11648/j.ajop.20190703.12
AMA Style
Abdallah Mohamed Hamed, Tarek Abd-Elmotelb Al-Saeed. Comparative Study Between Erythrocytes Blood Cells and Modulated Circular Aperture Using Speckle Photography. Am J Opt Photonics. 2019;7(3):57-62. doi: 10.11648/j.ajop.20190703.12
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Download@article{10.11648/j.ajop.20190703.12,
author = {Abdallah Mohamed Hamed and Tarek Abd-Elmotelb Al-Saeed},
title = {Comparative Study Between Erythrocytes Blood Cells and Modulated Circular Aperture Using Speckle Photography},
journal = {American Journal of Optics and Photonics},
volume = {7},
number = {3},
pages = {57-62},
doi = {10.11648/j.ajop.20190703.12},
url = {https://doi.org/10.11648/j.ajop.20190703.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajop.20190703.12},
abstract = {A manipulation of four circles arranged along the Cartesian coordinates in uniform circular aperture is compared with selected four blood cells forming the object using the technique of speckle photography. The aperture model is considered have two- fold symmetry. A diffuser is placed in the same plane of the object or the model of four circles in order to get the modulated speckle pattern which is the Fourier spectrum of object information convoluted with the Fourier spectrum of the random diffuser. The modulated speckle pattern is smeared by the Point Spread Function computed from the diffraction corresponding to the whole circular aperture. The reconstruction process gave nearly similar speckle images little degraded by the noise originated from the diffuser. The Point Spread Function corresponding to the model of four circles is computed analytically and also using the FFT technique. A comparison is made with the Fourier spectrum of the blood cells and its corresponding autocorrelation function giving nearly similar results. We can acquire the erythrocytes blood cells in the imaging plane by operating the FFT upon the modulated speckle images. The reconstructed images of blood cells are affected by the noise originated from the diffuser. A Mat- Lab code is made in the construction of the aperture and all the images computed in the processing.},
year = {2019}
}
TY - JOUR T1 - Comparative Study Between Erythrocytes Blood Cells and Modulated Circular Aperture Using Speckle Photography AU - Abdallah Mohamed Hamed AU - Tarek Abd-Elmotelb Al-Saeed Y1 - 2019/10/09 PY - 2019 N1 - https://doi.org/10.11648/j.ajop.20190703.12 DO - 10.11648/j.ajop.20190703.12 T2 - American Journal of Optics and Photonics JF - American Journal of Optics and Photonics JO - American Journal of Optics and Photonics SP - 57 EP - 62 PB - Science Publishing Group SN - 2330-8494 UR - https://doi.org/10.11648/j.ajop.20190703.12 AB - A manipulation of four circles arranged along the Cartesian coordinates in uniform circular aperture is compared with selected four blood cells forming the object using the technique of speckle photography. The aperture model is considered have two- fold symmetry. A diffuser is placed in the same plane of the object or the model of four circles in order to get the modulated speckle pattern which is the Fourier spectrum of object information convoluted with the Fourier spectrum of the random diffuser. The modulated speckle pattern is smeared by the Point Spread Function computed from the diffraction corresponding to the whole circular aperture. The reconstruction process gave nearly similar speckle images little degraded by the noise originated from the diffuser. The Point Spread Function corresponding to the model of four circles is computed analytically and also using the FFT technique. A comparison is made with the Fourier spectrum of the blood cells and its corresponding autocorrelation function giving nearly similar results. We can acquire the erythrocytes blood cells in the imaging plane by operating the FFT upon the modulated speckle images. The reconstructed images of blood cells are affected by the noise originated from the diffuser. A Mat- Lab code is made in the construction of the aperture and all the images computed in the processing. VL - 7 IS - 3 ER -
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