Search Results - "Ghaffari, Aboozar"

Image compression-encryption method based on two-dimensional sparse recovery and chaotic system by Ghaffari, Aboozar

“…In this paper, we propose an image compression-encryption method based on two-dimensional (2D) sparse representation and chaotic system. In the first step of…”
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ISRSL0: compressed sensing MRI with image smoothness regularized-smoothed norm by Hassan, Elaheh, Ghaffari, Aboozar

“…The reconstruction of MR images has always been a challenging inverse problem in medical imaging. Acceleration of MR scanning is of great importance for…”
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Robust Registration of Medical Images in the Presence of Spatially-Varying Noise by Abbasi-Asl, Reza, Ghaffari, Aboozar, Fatemizadeh, Emad

“…Spatially-varying intensity noise is a common source of distortion in medical images and is often associated with reduced accuracy in medical image…”
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Image encryption-compression method via encryption based sparse decomposition by Ghaffari, Aboozar

“…This paper proposes an image compression and encryption scheme based on sparse decomposition and chaotic system. The proposed approach contains three steps. In…”
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ISRSL0: compressed sensing MRI with image smoothness regularized-smoothed Formula: see text norm by Hassan, Elaheh, Ghaffari, Aboozar

“…The reconstruction of MR images has always been a challenging inverse problem in medical imaging. Acceleration of MR scanning is of great importance for…”
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Image Registration Based on Low Rank Matrix: Rank-Regularized SSD by Ghaffari, Aboozar, Fatemizadeh, Emad

“…Similarity measure is a main core of image registration algorithms. Spatially varying intensity distortion is an important challenge, which affects the…”
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A deep learning-based framework For ECG signal denoising based on stacked cardiac cycle tensor by Rasti-Meymandi, Arash, Ghaffari, Aboozar

“…•We have considered the pseudo-periodicity of the ECG signal by detaching each cardiac cycle and creating a stacked cardiac cycle (SCC) tensor to form a…”
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ISRSL0: compressed sensing MRI with image smoothness regularized-smoothed \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\:{\ell}_{0}$$\end{document} norm by Hassan, Elaheh, Ghaffari, Aboozar

“…The reconstruction of MR images has always been a challenging inverse problem in medical imaging. Acceleration of MR scanning is of great importance for…”
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RISM: Single-Modal Image Registration via Rank-Induced Similarity Measure by Ghaffari, Aboozar, Fatemizadeh, Emad

“…Similarity measure is an important block in image registration. Most traditional intensity-based similarity measures (e.g., sum-of-squared-difference,…”
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A modified sequential quadratic programming method for sparse signal recovery problems by Alamdari, Mohammad Saeid, Fatemi, Masoud, Ghaffari, Aboozar

“…•Sequential quadratic programming for sparse signal recovery provide superlinear convergence.•Theoretical global convergence results are well…”
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Plug and play augmented HQS: Convergence analysis and its application in MRI reconstruction by Rasti-Meymandi, Arash, Ghaffari, Aboozar, Fatemizadeh, Emad

“…Sparse recovery in the context of the inverse problem has become an enormously popular technique in reconstructing various degraded images in various…”
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Smooth non-negative sparse representation for face and handwritten recognition by Ghaffari, Aboozar, Kafaee, Mahdi, Abolghasemi, Vahid

“…In sparse representation problem, there is always interest to reduce the solution space by introducing additional constraints. This can lead to efficient…”
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Robust Huber similarity measure for image registration in the presence of spatially-varying intensity distortion by Ghaffari, Aboozar, Fatemizadeh, Emad

“…Similarity measure is an important part of image registration. The main challenge of similarity measure is lack of robustness to different distortions. A…”
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A new chaotic jerk system with hidden heart-shaped attractor: dynamical analysis, multistability, connecting curves and its application in image encryption by Vivekanandhan, Gayathri, Natiq, Hayder, Ghaffari, Aboozar, Bayani, Atiyeh, Rajagopal, Karthikeyan, Jafari, Sajad

“…Abstract Application of chaos in modeling natural phenomena and encryption encourages researchers to design new chaotic systems with exciting features. Here a…”
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A chaotic map with trigonometric functions: Dynamical analysis and its application in image encryption based on sparse representation and convolutional filters by Sriram, Balakrishnan, Ghaffari, Aboozar, Rajagopal, Karthikeyan, Jafari, Sajad, Tlelo-Cuautle, Esteban

“…A chaotic map with two sine functions is studied here, and its chaotic dynamics are investigated. Bifurcation diagrams and Lyapunov exponents of the map by…”
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Medical Image Registration Using Sparse Coding of Image Patches by Afzali, Maryam, Ghaffari, Aboozar, Fatemizadeh, Emad, Soltanian-Zadeh, Hamid

“…Abstract Image registration is a basic task in medical image processing applications like group analysis and atlas construction. Similarity measure is a…”
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Sparse decomposition of two dimensional signals by Ghaffari, A., Babaie-Zadeh, M., Jutten, C.

“…In this paper, we consider sparse decomposition (SD) of two-dimensional (2D) signals on overcomplete dictionaries with separable atoms. Although, this problem…”
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Efficient Deep Learning-based Estimation of the Vital Signs on Smartphones by Samavati, Taha, Farvardin, Mahdi, Ghaffari, Aboozar

“…With the increasing use of smartphones in our daily lives, these devices have become capable of performing many complex tasks. Concerning the need for…”
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A Non-contact heart rate estimation framework based on photoplethysmography amplitude variation elimination and data fusion by Rasti-Meymandi, Arash, Karimzadeh, Reza, Zarei, Asghar, Ghaffari, Aboozar

“…The evaluation and assessment of Heart Rate Variability (HRV) from contact-based methods have had quite a journey throughout the annals of medical diagnosis…”
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Robust registration of medical images in the presence of spatially-varying noise by Abbasi-Asl, Reza, Ghaffari, Aboozar, Fatemizadeh, Emad

“…Spatially-varying intensity noise is a common source of distortion in medical images. Bias field noise is one example of such a distortion that is often…”
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