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Aggelos K. Katsaggelos
Researcher at Northwestern University
Publications - 999
Citations - 28918
Aggelos K. Katsaggelos is an academic researcher from Northwestern University. The author has contributed to research in topics: Image restoration & Image processing. The author has an hindex of 76, co-authored 946 publications receiving 26196 citations. Previous affiliations of Aggelos K. Katsaggelos include University of Stavanger & Delft University of Technology.
Papers
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Proceedings ArticleDOI
Detection of atrial fibrillation in ECG hand-held devices using a random forest classifier
Morteza Zabihi,Ali Bahrami Rad,Aggelos K. Katsaggelos,Serkan Kiranyaz,Susanna Narkilahti,Moncef Gabbouj +5 more
TL;DR: This study is focused on detection of AF rhythm using hand-held ECG monitoring devices, in addition to three other classes: normal or sinus rhythm, other rhythms, and too noisy to analyze.
Journal ArticleDOI
A Dynamic Hierarchical Clustering Method for Trajectory-Based Unusual Video Event Detection
TL;DR: The proposed unusual video event detection method is based on unsupervised clustering of object trajectories, which are modeled by hidden Markov models (HMM), and includes a dynamic hierarchical process incorporated in the trajectory clustering algorithm.
Journal ArticleDOI
Maximum likelihood blur identification and image restoration using the EM algorithm
Aggelos K. Katsaggelos,K.T. Lay +1 more
TL;DR: An algorithm for the identification of the blur and the restoration of a noisy blurred image that is exploited in computing the maximum likelihood estimates of the original image and the additive noise.
Journal ArticleDOI
Generative Adversarial Networks and Perceptual Losses for Video Super-Resolution
TL;DR: This paper introduces a new generator network optimized for the VSR problem, named VSRResNet, along with new discriminator architecture to properly guide V SRResNet during the GAN training, and introduces the PercepDist metric, which more accurately evaluates the perceptual quality of SR solutions obtained from neural networks, compared with the commonly used PSNR/SSIM metrics.
Journal ArticleDOI
Image identification and restoration based on the expectation-maximization algorithm
TL;DR: The problem of identifying the image and blur parameters and restoring a noisy blurred image is addressed and two algorithms for identification/restoration, based on two different choices of complete data, are derived and compared.