Dr. Alireza Ahmadian Profile

Dr. Alireza Ahmadian

at Tehran Univ of Medical Sciences

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Author

Publications (6)

SPIE Journal Paper | 7 October 2020 Open Access

Photoacoustic image improvement based on a combination of sparse coding and filtering

Ebrahim Najafzadeh, Parastoo Farnia, Saeedeh Lavasani, Maryam Basij, Yan Yan, Hossein Ghadiri, Alireza Ahmadian, Mohammad Mehrmohammadi

JBO, Vol. 25, Issue 10, 106001, (October 2020) https://doi.org/10.1117/12.10.1117/1.JBO.25.10.106001

KEYWORDS: Denoising, Signal to noise ratio, Interference (communication), Image quality, Photoacoustic spectroscopy, Wavelets, Image compression, Signal detection, Linear filtering, Tissue optics

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SPIE Journal Paper | 28 July 2020 Open Access

Retinal image mosaicking using scale-invariant feature transformation feature descriptors and Voronoi diagram (Erratum)

Jalil Jalili, Sedigheh Hejazi, Mohammad Riazi-Esfahani, Arash Eliasi, Mohsen Ebrahimi, Mojtaba Seydi, Masoud Aghsaei Fard, Alireza Ahmadian

JMI, Vol. 7, Issue 04, 049801, (July 2020) https://doi.org/10.1117/12.10.1117/1.JMI.7.4.049801

KEYWORDS: Eye, Medical research, Ophthalmology, Medicine, Medical physics, Medical imaging, Medical equipment, Biomedical engineering

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SPIE Journal Paper | 15 July 2020

Retinal image mosaicking using scale-invariant feature transformation feature descriptors and Voronoi diagram

Jalil Jalili, Sedigheh Hejazi, Mohammad Riazi-Esfahani, Arash Eliasi, Mohsen Ebrahimi, Mojtaba Seydi, Masoud Aghsaei Fard, Alireza Ahmadian

JMI, Vol. 7, Issue 04, 044001, (July 2020) https://doi.org/10.1117/12.10.1117/1.JMI.7.4.044001

KEYWORDS: Image registration, Image segmentation, Retina, Databases, Darmstadtium, Cameras, Imaging systems, Image enhancement, Feature extraction

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Proceedings Article | 1 October 2011 Paper

B-spline based free form deformation thoracic non-rigid registration of CT and PET images

Davood Khodadad, Alireza Ahmadian, Mohammadreza Ay, Armaghan Fard Esfahani, Hossein Yousefi Banaem, Habib Zaidi

Proceedings Volume 8285, 82851K (2011) https://doi.org/10.1117/12.913422

KEYWORDS: Positron emission tomography, Image registration, Computed tomography, Image segmentation, Signal attenuation, Data corrections, Image processing, Linear filtering, Tumors, Image processing algorithms and systems

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Proceedings Article | 27 March 2009 Paper

Mammography mass detection: a multi-stage hybrid approach

Nima Sahba, Vahid Tavakoli, Alireza Ahmadian, Masoumeh Giti

Proceedings Volume 7259, 725947 (2009) https://doi.org/10.1117/12.810727

KEYWORDS: Mammography, Feature extraction, Digital filtering, Detection and tracking algorithms, Databases, Lithium, Image filtering, Binary data, Principal component analysis, Medical imaging

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Proceedings Article | 23 October 1996 Paper

Orthogonal wavelets for image transmission and compression schemes: implementation and results

Alireza Ahmadian, Anil Bharath

Proceedings Volume 2825, (1996) https://doi.org/10.1117/12.255306

KEYWORDS: Image compression, Image transmission, Image quality, Wavelets, Medical imaging, Computer programming, Image processing, Image resolution, Diagnostics, Algorithms

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Showing 5 of 6 publications

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