Volume 7, Issue 3, September 2019, Page: 57-62
Comparative Study Between Erythrocytes Blood Cells and Modulated Circular Aperture Using Speckle Photography
Abdallah Mohamed Hamed, Physics Department, Faculty of Science, Ain Shams University, Cairo, Egypt
Tarek Abd-Elmotelb Al-Saeed, Biomedical Department, Faculty of Engineering, Helwan University, Cairo, Egypt
Received: Aug. 3, 2019;       Accepted: Aug. 22, 2019;       Published: Oct. 9, 2019
DOI: 10.11648/j.ajop.20190703.12      View  49      Downloads  10
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.
Keywords
Two - Fold Symmetrical Aperture, Model of Four Circles as Aperture, Point Spread Function, Speckle Imaging
To cite this article
Abdallah Mohamed Hamed, Tarek Abd-Elmotelb Al-Saeed, Comparative Study Between Erythrocytes Blood Cells and Modulated Circular Aperture Using Speckle Photography, American Journal of Optics and Photonics. Vol. 7, No. 3, 2019, pp. 57-62. doi: 10.11648/j.ajop.20190703.12
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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