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The defocus deblurring raised from the finite aperture size and exposure time is an essential problem in the computational photography. It is very challenging because the blur kernel is spatially varying and difficult to estimate by…

Image and Video Processing · Electrical Eng. & Systems 2021-06-01 Pengwei Liang , Junjun Jiang , Xianming Liu , Jiayi Ma

Atrial Fibrillation (AF) is a heart's arrhythmia which, despite being often asymptomatic, represents an important risk factor for stroke, therefore being able to predict AF at the electrocardiogram exam, would be of great impact on actively…

Signal Processing · Electrical Eng. & Systems 2022-02-14 A. Scagnetto , G. Barbati , I. Gandin , C. Cappelletto , G. Baj , A. Cazzaniga , F. Cuturello , A. Ansuini , L. Bortolussi , A. Di Lenarda

Importance: Non-contrast head CT scan is the current standard for initial imaging of patients with head trauma or stroke symptoms. Objective: To develop and validate a set of deep learning algorithms for automated detection of following key…

Computer Vision and Pattern Recognition · Computer Science 2018-04-13 Sasank Chilamkurthy , Rohit Ghosh , Swetha Tanamala , Mustafa Biviji , Norbert G. Campeau , Vasantha Kumar Venugopal , Vidur Mahajan , Pooja Rao , Prashant Warier

Ischemic stroke lesion segmentation from Computed Tomography Perfusion (CTP) images is important for accurate diagnosis of stroke in acute care units. However, it is challenged by low image contrast and resolution of the perfusion parameter…

Image and Video Processing · Electrical Eng. & Systems 2021-01-01 Guotai Wang , Tao Song , Qiang Dong , Mei Cui , Ning Huang , Shaoting Zhang

Determining brain hemodynamics plays a critical role in the diagnosis and treatment of various cerebrovascular diseases. In this work, we put forth a physics-informed deep learning framework that augments sparse clinical measurements with…

Medical Physics · Physics 2021-08-27 Mohammad Sarabian , Hessam Babaee , Kaveh Laksari

Automatic blood vessel segmentation from retinal images plays an important role in the diagnosis of many systemic and eye diseases, including retinopathy of prematurity. Current state-of-the-art research in blood vessel segmentation from…

Image and Video Processing · Electrical Eng. & Systems 2023-06-21 Gorana Gojić , Veljko Petrović , Radovan Turović , Dinu Dragan , Ana Oros , Dušan Gajić , Nebojša Horvat

Due to the limited accuracy of 4D Magnetic Resonance Imaging (MRI) in identifying hemodynamics in cardiovascular diseases, the challenges in obtaining patient-specific flow boundary conditions, and the computationally demanding and…

Machine Learning · Computer Science 2025-03-25 Oscar L. Cruz-González , Valérie Deplano , Badih Ghattas

CT perfusion imaging (CTP) is used in the diagnostic workup of acute ischemic stroke (AIS). CTP may be performed within the angio suite using flat detector CT (FDCT) to help reduce patient management time. In order to significantly improve…

Medical Physics · Physics 2022-04-21 Vojtěch Kulvait , Philip Hoelter , Robert Frysch , Hana Haseljić , Arnd Doerfler , Georg Rose

Ischemic stroke is a common disease in the elderly population, which can cause long-term disability and even death. However, the time window for treatment of ischemic stroke in its acute stage is very short. To fast localize and…

Image and Video Processing · Electrical Eng. & Systems 2020-09-22 Bin Zhao , Shuxue Ding , Hong Wu , Guohua Liu , Chen Cao , Song Jin , Zhiyang Liu

The impulse response function (IRF) of a localized bolus in cerebral blood flow codes important information on the tissue type. It is indirectly accessible both from MR- and CT-imaging methods, at least in principle. In practice, however,…

Tissues and Organs · Quantitative Biology 2014-09-30 Evelyn Rost , Ralf Geske , Michael Baake

In recent years, Denoising Diffusion Models have demonstrated remarkable success in generating semantically valuable pixel-wise representations for image generative modeling. In this study, we propose a novel end-to-end framework, called…

Image and Video Processing · Electrical Eng. & Systems 2023-03-21 Zhaohu Xing , Liang Wan , Huazhu Fu , Guang Yang , Lei Zhu

Intravoxel Incoherent Motion (IVIM) is a non-contrast magnetic resonance imaging diffusion-based scan that uses a multitude of b-values to measure various speeds of molecular perfusion and diffusion, sidestepping inaccuracy of arterial…

Medical Physics · Physics 2025-01-22 M. Liu , N. Saadat , Y. Jeong , S. Roth , M. Niekrasz , M. Giurcanu , T. Carroll , G. Christoforidis

Deep neural networks are being increasingly used for short-term traffic flow prediction, which can be generally categorized as convolutional (CNNs) or graph neural networks (GNNs). CNNs are preferable for region-wise traffic prediction by…

Physics and Society · Physics 2021-10-12 Wei Zeng , Chengqiao Lin , Kang Liu , Juncong Lin , Anthony K. H. Tung

Intelligent edge devices with built-in processors vary widely in terms of capability and physical form to perform advanced Computer Vision (CV) tasks such as image classification and object detection, for example. With constant advances in…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Priyank Kalgaonkar , Mohamed El-Sharkawy

Phase retrieval aims to recover a signal from intensity-only measurements, a fundamental problem in many fields such as imaging, holography, optical computing, crystallography, and microscopy. Although there are several well-known phase…

Image and Video Processing · Electrical Eng. & Systems 2026-01-21 Mehmet Onurcan Kaya , Figen S. Oktem

Video frame prediction remains a fundamental challenge in computer vision with direct implications for autonomous systems, video compression, and media synthesis. We present FG-DFPN, a novel architecture that harnesses the synergy between…

Image and Video Processing · Electrical Eng. & Systems 2025-03-17 M. Akın Yılmaz , Ahmet Bilican , A. Murat Tekalp

Infrared and visible image fusion (IVIF) expects to obtain images that retain thermal radiation information from infrared images and texture details from visible images. In this paper, a model-based convolutional neural network (CNN) model,…

Computer Vision and Pattern Recognition · Computer Science 2021-04-26 Zixiang Zhao , Shuang Xu , Jiangshe Zhang , Chengyang Liang , Chunxia Zhang , Junmin Liu

Neural networks with relatively shallow layers and simple structures may have limited ability in accurately identifying pneumonia. In addition, deep neural networks also have a large demand for computing resources, which may cause…

Image and Video Processing · Electrical Eng. & Systems 2024-06-14 Houze Liu , Iris Li , Yaxin Liang , Dan Sun , Yining Yang , Haowei Yang

In the case of vector flow imaging systems, the most employed flow estimation techniques are the directional beamforming based cross correlation and the triangulation-based autocorrelation. However, the directional beamforming-based…

Signal Processing · Electrical Eng. & Systems 2022-06-07 A. N. Madhavanunni , Mahesh Raveendranatha Panicker