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ORCIDGiorgos Sfikas
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2020 – today
- 2024
[j7]Iason-Ioannis Panagos
, Giorgos Sfikas, Christophoros Nikou:
Visual speech recognition using compact hypercomplex neural networks. Pattern Recognit. Lett. 186: 1-7 (2024)- [j6]Andreas El Saer, Lazaros Grammatikopoulos, Giorgos Sfikas, George Karras, Elli Petsa:
A Novel Framework for Image Matching and Stitching for Moving Car Inspection under Illumination Challenges. Sensors 24(4): 1083 (2024) - [c50]Giorgos Sfikas, Panagiotis Dimitrakopoulos, George Retsinas, Christophoros Nikou, Pinelopi Kitsiou:
Bessarion: Medieval Greek Inscriptions on a Challenging Dataset for Vision and NLP Tasks. DAS 2024: 393-407 - [c49]George Retsinas, Konstantina Nikolaidou, Giorgos Sfikas:
Enhancing CRNN HTR Architectures with Transformer Blocks. ICDAR (4) 2024: 425-440 - [c48]Panagiotis Dimitrakopoulos, Giorgos Sfikas, Christophoros Nikou:
Implicit Neural Representation Inference for Low-Dimensional Bayesian Deep Learning. ICLR 2024 - [e1]Giorgos Sfikas, George Retsinas:
Document Analysis Systems - 16th IAPR International Workshop, DAS 2024, Athens, Greece, August 30-31, 2024, Proceedings. Lecture Notes in Computer Science 14994, Springer 2024, ISBN 978-3-031-70441-3 [contents] - [i8]George Retsinas, Giorgos Sfikas, Basilis Gatos, Christophoros Nikou:
Best Practices for a Handwritten Text Recognition System. CoRR abs/2404.11339 (2024) - [i7]Konstantina Nikolaidou, George Retsinas, Giorgos Sfikas, Marcus Liwicki:
Rethinking HTG Evaluation: Bridging Generation and Recognition. CoRR abs/2409.02683 (2024) - [i6]Konstantina Nikolaidou, George Retsinas, Giorgos Sfikas, Marcus Liwicki:
DiffusionPen: Towards Controlling the Style of Handwritten Text Generation. CoRR abs/2409.06065 (2024) - 2023
- [c47]George Retsinas, Giorgos Sfikas, Panagiotis Paraskevas Filntisis, Petros Maragos:
Newton-Based Trainable Learning Rate. ICASSP 2023: 1-5 - [c46]Giorgos Sfikas, George Retsinas, Panagiotis Dimitrakopoulos, Basilis Gatos, Christophoros Nikou:
Shared-Operation Hypercomplex Networks for Handwritten Text Recognition. ICDAR (4) 2023: 200-216 - [c45]Giorgos Sfikas, George Retsinas, Basilis Gatos:
Document Binarization with Quaternionic Double Discriminator Generative Adversarial Network. ICDAR Workshops (2) 2023: 272-284 - [c44]Konstantina Nikolaidou, George Retsinas, Vincent Christlein, Mathias Seuret, Giorgos Sfikas, Elisa Barney Smith, Hamam Mokayed, Marcus Liwicki:
WordStylist: Styled Verbatim Handwritten Text Generation with Latent Diffusion Models. ICDAR (2) 2023: 384-401 - [c43]George Retsinas, Giorgos Sfikas, Christophoros Nikou:
Keyword Spotting Simplified: A Segmentation-Free Approach Using Character Counting and CTC Re-scoring. ICDAR (1) 2023: 446-464 - [i5]Konstantina Nikolaidou, George Retsinas, Vincent Christlein, Mathias Seuret, Giorgos Sfikas, Elisa Barney Smith, Hamam Mokayed, Marcus Liwicki:
WordStylist: Styled Verbatim Handwritten Text Generation with Latent Diffusion Models. CoRR abs/2303.16576 (2023) - [i4]Giorgos Sfikas, George Retsinas:
On the Matrix Form of the Quaternion Fourier Transform and Quaternion Convolution. CoRR abs/2307.01836 (2023) - [i3]George Retsinas, Giorgos Sfikas, Christophoros Nikou:
Keyword Spotting Simplified: A Segmentation-Free Approach using Character Counting and CTC re-scoring. CoRR abs/2308.03515 (2023) - 2022
- [c42]George Retsinas, Giorgos Sfikas, Basilis Gatos, Christophoros Nikou:
Best Practices for a Handwritten Text Recognition System. DAS 2022: 247-259 - [c41]George Retsinas, Giorgos Sfikas, Basilis Gatos, Christophoros Nikou:
On-the-Fly Deformations for Keyword Spotting. DAS 2022: 338-351 - [c40]Giorgos Sfikas, George Retsinas, Angelos P. Giotis, Basilis Gatos, Christophoros Nikou:
Keyword Spotting with Quaternionic ResNet: Application to Spotting in Greek Manuscripts. DAS 2022: 382-396 - [c39]Panagiotis Dimitrakopoulos, Giorgos Sfikas, Christophoros Nikou:
Variational Feature Pyramid Networks. ICML 2022: 5142-5152 - [c38]Giorgos Sfikas, George Retsinas, Basilis Gatos, Christophoros Nikou:
Hypercomplex Generative Adversarial Networks for Lightweight Semantic Labeling. ICPRAI (1) 2022: 251-262 - [c37]Angelos P. Giotis, Giorgos Sfikas, Christophoros Nikou:
Adversarial deep features for weakly supervised document image keyword spotting. IVMSP 2022: 1-5 - [c36]Aggelos Katsaliros, Iason-Ioannis Panagos, Giorgos Sfikas, Christophoros Nikou:
Road Crack Detection Using Quaternion Neural Networks. IVMSP 2022: 1-5 - [c35]Iason-Ioannis Panagos, Giorgos Sfikas, Christophoros Nikou:
Compressing Audio Visual Speech Recognition Models With Parameterized Hypercomplex Layers. SETN 2022: 44:1-44:7 - 2021
- [c34]George Retsinas, Giorgos Sfikas, Christophoros Nikou, Petros Maragos:
From Seq2Seq Recognition to Handwritten Word Embeddings. BMVC 2021: 98 - [c33]George Retsinas, Giorgos Sfikas, Christophoros Nikou:
Iterative Weighted Transductive Learning for Handwriting Recognition. ICDAR (4) 2021: 587-601 - [c32]George Retsinas, Giorgos Sfikas, Christophoros Nikou, Petros Maragos:
Deformation-Invariant Networks For Handwritten Text Recognition. ICIP 2021: 949-953 - 2020
- [j5]Giorgos Tsigkas, Giorgos Sfikas, Anastasios Pasialis, Andreas Vlachopoulos, Christophoros Nikou:
Markerless detection of ancient rock carvings in the wild: rock art in Vathy, Astypalaia. Pattern Recognit. Lett. 135: 337-345 (2020) - [c31]Panagiotis Dimitrakopoulos, Giorgos Sfikas, Christophoros Nikou:
Wind: Wasserstein Inception Distance For Evaluating Generative Adversarial Network Performance. ICASSP 2020: 3182-3186 - [c30]Giorgos Sfikas, Dimosthenis Ioannidis, Dimitrios Tzovaras:
Quaternion Harris For Multispectral Keypoint Detection. ICIP 2020: 11-15 - [c29]Giorgos Sfikas, Angelos P. Giotis, George Retsinas, Christophoros Nikou:
Quaternion Generative Adversarial Networks for Inscription Detection in Byzantine Monuments. ICPR Workshops (7) 2020: 171-184 - [c28]Victor Megir, Giorgos Sfikas, Athanasios Mekras, Christophoros Nikou, Dimosthenis Ioannidis, Dimitrios Tzovaras:
Salient Object Detection with Pretrained Deeplab and k-Means: Application to UAV-Captured Building Imagery. ICPR Workshops (7) 2020: 477-489 - [c27]Panagiotis Dimitrakopoulos, Giorgos Sfikas, Christophoros Nikou:
ISING-GAN: Annotated Data Augmentation with a Spatially Constrained Generative Adversarial Network. ISBI 2020: 1600-1603 - [c26]Giorgos Sfikas, Dimosthenis Ioannidis, Dimitrios Tzovaras:
Quaternionic keypoint description for multispectral imaging. SETN 2020: 78-84 - [i2]George Retsinas, Giorgos Sfikas, Petros Maragos:
WSRNet: Joint Spotting and Recognition of Handwritten Words. CoRR abs/2008.07109 (2020)
2010 – 2019
- 2019
- [j4]Günter Mühlberger, Louise Seaward, Melissa Terras, Sofia Ares Oliveira, Vicente Bosch, Maximilian Bryan, Sebastian Colutto, Hervé Déjean, Markus Diem, Stefan Fiel, Basilis Gatos, Albert Greinoecker, Tobias Grüning, Günter Hackl, Vili Haukkovaara, Gerhard Heyer, Lauri Hirvonen, Tobias Hodel, Matti Jokinen, Philip Kahle, Mario Kallio, Frédéric Kaplan, Florian Kleber, Roger Labahn, Eva Maria Lang, Sören Laube, Gundram Leifert, Georgios Louloudis, Rory McNicholl, Jean-Luc Meunier, Johannes Michael, Elena Mühlbauer, Nathanael Philipp, Ioannis Pratikakis, Joan Puigcerver Pérez, Hannelore Putz, George Retsinas, Verónica Romero, Robert Sablatnig, Joan-Andreu Sánchez, Philip Schofield, Giorgos Sfikas, Christian Sieber, Nikolaos Stamatopoulos, Tobias Strauß, Tamara Terbul, Alejandro H. Toselli, Berthold Ulreich, Mauricio Villegas, Enrique Vidal, Johanna Walcher, Max Weidemann, Herbert Wurster, Konstantinos Zagoris:
Transforming scholarship in the archives through handwritten text recognition. J. Documentation 75(5): 954-976 (2019) - [c25]Panagiotis Dimitrakopoulos, Giorgos Sfikas, Christophoros Nikou:
Nuclei Detection Using Residual Attention Feature Pyramid Networks. BIBE 2019: 109-114 - [c24]George Retsinas, Georgios Louloudis, Nikolaos Stamatopoulos, Giorgos Sfikas, Basilis Gatos:
An Alternative Deep Feature Approach to Line Level Keyword Spotting. CVPR 2019: 12658-12666 - [c23]Panagiotis Kouzouglidis, Giorgos Sfikas, Christophoros Nikou:
Automatic Video Colorization Using 3D Conditional Generative Adversarial Networks. ISVC (1) 2019: 209-218 - [i1]Panagiotis Kouzouglidis, Giorgos Sfikas, Christophoros Nikou:
Automatic Video Colorization using 3D Conditional Generative Adversarial Networks. CoRR abs/1905.03023 (2019) - 2018
- [j3]Katerina Papadimitriou, Giorgos Sfikas, Christophoros Nikou:
Tomographic Image Reconstruction with a Spatially Varying Gamma Mixture Prior. J. Math. Imaging Vis. 60(8): 1355-1365 (2018) - [c22]George Retsinas, Giorgos Sfikas, Nikolaos Stamatopoulos, Georgios Louloudis, Basilis Gatos:
Exploring Critical Aspects of CNN-based Keyword Spotting. A PHOCNet Study. DAS 2018: 13-18 - [c21]George Retsinas, Giorgos Sfikas, Georgios Louloudis, Nikolaos Stamatopoulos, Basilis Gatos:
Compact Deep Descriptors for Keyword Spotting. ICFHR 2018: 315-320 - [c20]Marina E. Plissiti, Panagiotis Dimitrakopoulos, Giorgos Sfikas, Christophoros Nikou, O. Krikoni, Antonia Charchanti:
Sipakmed: A New Dataset for Feature and Image Based Classification of Normal and Pathological Cervical Cells in Pap Smear Images. ICIP 2018: 3144-3148 - 2017
- [j2]Angelos P. Giotis, Giorgos Sfikas, Basilis Gatos, Christophoros Nikou:
A survey of document image word spotting techniques. Pattern Recognit. 68: 310-332 (2017) - [c19]Basilis Gatos, Georgios Louloudis, Nikolaos Stamatopoulos, Giorgos Sfikas:
Historical Document Processing. DocEng 2017: 1-2 - [c18]George Retsinas, Giorgos Sfikas, Basilis Gatos:
Transferable Deep Features for Keyword Spotting. IWCIM@EUSIPCO 2017: 89 - [c17]George Retsinas, Nikolaos Stamatopoulos, Georgios Louloudis, Giorgos Sfikas, Basilis Gatos:
Nonlinear Manifold Embedding on Keyword Spotting Using t-SNE. ICDAR 2017: 487-492 - [c16]Giorgos Sfikas, George Retsinas, Basilis Gatos:
A PHOC Decoder for Lexicon-Free Handwritten Word Recognition. ICDAR 2017: 513-518 - [c15]Giorgos Sfikas, Basilis Gatos, Christophoros Nikou:
Semicca: A new semi-supervised probabilistic CCA model for keyword spotting. ICIP 2017: 1107-1111 - 2016
- [c14]Georgios Louloudis, Giorgos Sfikas, Nikolaos Stamatopoulos, Basilis Gatos:
Word Segmentation Using the Student's-t Distribution. DAS 2016: 78-83 - [c13]Giorgos Sfikas, Georgios Louloudis, Nikolaos Stamatopoulos, Basilis Gatos:
Bayesian Mixture Models on Connected Components for Newspaper Article Segmentation. DocEng 2016: 143-146 - [c12]Giorgos Sfikas, George Retsinas, Basilis Gatos:
Zoning Aggregated Hypercolumns for Keyword Spotting. ICFHR 2016: 283-288 - [c11]Giorgos Sfikas, Christophoros Nikou:
Bayesian Multiview Manifold Learning Applied to Hippocampus Shape and Clinical Score Data. MCV/BAMBI@MICCAI 2016: 160-171 - 2015
- [c10]Angelos P. Giotis, Giorgos Sfikas, Christophoros Nikou, Basilis Gatos:
Shape-based word spotting in handwritten document images. ICDAR 2015: 561-565 - [c9]Basilis Gatos, Nikolaos Stamatopoulos, Georgios Louloudis, Giorgos Sfikas, George Retsinas, Vassilis Papavassiliou, Fotini Sunistira, Vassilis Katsouros:
GRPOLY-DB: An old Greek polytonic document image database. ICDAR 2015: 646-650 - [c8]Giorgos Sfikas, Angelos P. Giotis, Georgios Louloudis, Basilis Gatos:
Using attributes for word spotting and recognition in polytonic greek documents. ICDAR 2015: 686-690 - 2011
- [c7]Giorgos Sfikas, Christophoros Nikou, Nikolas P. Galatsanos, Christian Heinrich:
Majorization-minimization mixture model determination in image segmentation. CVPR 2011: 2169-2176 - 2010
- [j1]Giorgos Sfikas, Christophoros Nikou, Nikolas P. Galatsanos, Christian Heinrich:
Spatially Varying Mixtures Incorporating Line Processes for Image Segmentation. J. Math. Imaging Vis. 36(2): 91-110 (2010) - [c6]Giorgos Sfikas, Christian Heinrich, Christophoros Nikou:
Multiple Atlas Inference and Population Analysis Using Spectral Clustering. ICPR 2010: 2500-2503
2000 – 2009
- 2009
- [c5]Giorgos Sfikas, Christian Heinrich, Jihad Zallat, Christophoros Nikou, Nikolas P. Galatsanos:
Joint recovery and segmentation of polarimetric images using a compound MRF and mixture modeling. ICIP 2009: 3901-3904 - 2008
- [c4]Giorgos Sfikas, Christophoros Nikou, Nikolas P. Galatsanos:
Edge preserving spatially varying mixtures for image segmentation. CVPR 2008 - [c3]Giorgos Sfikas, Christophoros Nikou, Nikolas P. Galatsanos, Christian Heinrich:
MR Brain Tissue Classification Using an Edge-Preserving Spatially Variant Bayesian Mixture Model. MICCAI (1) 2008: 43-50 - 2007
- [c2]Giorgos Sfikas, Christophoros Nikou, Nikolas P. Galatsanos:
Robust Image Segmentation with Mixtures of Student's t-Distributions. ICIP (1) 2007: 273-276 - 2005
- [c1]Giorgos Sfikas, Constantinos Constantinopoulos, Aristidis Likas, Nikolas P. Galatsanos:
An Analytic Distance Metric for Gaussian Mixture Models with Application in Image Retrieval. ICANN (2) 2005: 835-840
Coauthor Index
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