George A. Kastis

Publication Activity (10 Years)

Years Active: 2001-2022
Publications (10 Years): 5

Top Topics

Sigmoid Function

Image Restoration

Low Rank Approximation

Top Venues

Comput. Biol. Medicine

Publications

Alexandros Vrachliotis, George A. Kastis, Nicholas E. Protonotarios, Athanasios S. Fokas, Stephan G. Nekolla, Constantinos D. Anagnostopoulos, Lena Costaridou, Anastasios Gaitanis
Evaluation of the spline reconstruction technique for preclinical PET imaging. Comput. Methods Programs Biomed. 217 (2022)
Nicholas E. Protonotarios, Athanassios S. Fokas, George A. Kastis, Nikolaos Dikaios
Sigmoid and Beyond: Algebraic Activation Functions for Artificial Neural Networks Based on Solutions of a Riccati Equation. IT Prof. 24 (5) (2022)
Nicholas E. Protonotarios, Evangelia Tzampazidou, George A. Kastis, Nikolaos Dikaios
Discrete Shearlets as a Sparsifying Transform in Low-Rank Plus Sparse Decomposition for Undersampled (k, t)-Space MR Data. J. Imaging 8 (2) (2022)
Nicholas E. Protonotarios, Antonios Charalambopoulos, George A. Kastis, Krzysztof Kacperski, Athanassios S. Fokas
A Spline Approach to Parallel-Hole Collimator Deblurring for aSRT-Reconstructed SPECT Images. BIBE (2019)
Nicholas E. Protonotarios, George M. Spyrou, George A. Kastis
Automatic cumulative sums contour detection of FBP-reconstructed multi-object nuclear medicine images. Comput. Biol. Medicine 85 (2017)
Paolo Emilio Barbano, Athanassios S. Fokas, George A. Kastis
Analytical reconstructions for PET and spect employing L1-denoising. DPS (2009)
John W. Hoppin, Matthew A. Kupinski, George A. Kastis, Eric Clarkson, Harrison H. Barrett
Objective Comparison of Quantitative Imaging Modalities Without the Use of a Gold Standard. IEEE Trans. Medical Imaging 21 (5) (2002)
John W. Hoppin, Matthew A. Kupinski, George A. Kastis, Eric Clarkson, Harrison H. Barrett
Objective Comparison of Quantitative Imaging Modalities Without the Use of a Gold Standard. IPMI (2001)