Christophoros Nikou

Orcid: 0000-0003-1388-6915

According to our database1, Christophoros Nikou authored at least 127 papers between 1998 and 2023.

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Bibliography

2023
A New Benchmark for Consumer Visual Tracking and Apparent Demographic Estimation from RGB and Thermal Images.
Sensors, December, 2023

Spatial Transformer Generative Adversarial Network for Image Super-Resolution.
Proceedings of the Image Analysis and Processing - ICIAP 2023, 2023

Shared-Operation Hypercomplex Networks for Handwritten Text Recognition.
Proceedings of the Document Analysis and Recognition - ICDAR 2023, 2023

Keyword Spotting Simplified: A Segmentation-Free Approach Using Character Counting and CTC Re-scoring.
Proceedings of the Document Analysis and Recognition - ICDAR 2023, 2023

Composition of Motion from Video Animation Through Learning Local Transformations.
Proceedings of the IEEE International Conference on Acoustics, 2023

2022
FaceMask: A New Image Dataset for the Automated Identification of People Wearing Masks in the Wild.
Sensors, 2022

Compressing Audio Visual Speech Recognition Models With Parameterized Hypercomplex Layers.
Proceedings of the SETN 2022: 12th Hellenic Conference on Artificial Intelligence, Corfu, Greece, September 7, 2022

Multi-object Visual Tracking for Indoor Images of Retail Consumers.
Proceedings of the 14th IEEE Image, Video, and Multidimensional Signal Processing Workshop, 2022

Road Crack Detection Using Quaternion Neural Networks.
Proceedings of the 14th IEEE Image, Video, and Multidimensional Signal Processing Workshop, 2022

Adversarial deep features for weakly supervised document image keyword spotting.
Proceedings of the 14th IEEE Image, Video, and Multidimensional Signal Processing Workshop, 2022

Hypercomplex Generative Adversarial Networks for Lightweight Semantic Labeling.
Proceedings of the Pattern Recognition and Artificial Intelligence, 2022

Variational Feature Pyramid Networks.
Proceedings of the International Conference on Machine Learning, 2022

Keyword Spotting with Quaternionic ResNet: Application to Spotting in Greek Manuscripts.
Proceedings of the Document Analysis Systems - 15th IAPR International Workshop, 2022

On-the-Fly Deformations for Keyword Spotting.
Proceedings of the Document Analysis Systems - 15th IAPR International Workshop, 2022

Best Practices for a Handwritten Text Recognition System.
Proceedings of the Document Analysis Systems - 15th IAPR International Workshop, 2022

2021
Human activity recognition using robust adaptive privileged probabilistic learning.
Pattern Anal. Appl., 2021

Deformation-Invariant Networks For Handwritten Text Recognition.
Proceedings of the 2021 IEEE International Conference on Image Processing, 2021

Iterative Weighted Transductive Learning for Handwriting Recognition.
Proceedings of the 16th International Conference on Document Analysis and Recognition, 2021

From Seq2Seq Recognition to Handwritten Word Embeddings.
Proceedings of the 32nd British Machine Vision Conference 2021, 2021

2020
Markerless detection of ancient rock carvings in the wild: rock art in Vathy, Astypalaia.
Pattern Recognit. Lett., 2020

Gender and Age Estimation Without Facial Information from Still Images.
Proceedings of the Advances in Visual Computing - 15th International Symposium, 2020

ISING-GAN: Annotated Data Augmentation with a Spatially Constrained Generative Adversarial Network.
Proceedings of the 17th IEEE International Symposium on Biomedical Imaging, 2020

Improving 3D Medical Image Compression Efficiency Using Spatiotemporal Coherence.
Proceedings of the Image Processing: Algorithms and Systems XVIII, 2020

Quaternion Generative Adversarial Networks for Inscription Detection in Byzantine Monuments.
Proceedings of the Pattern Recognition. ICPR International Workshops and Challenges, 2020

Salient Object Detection with Pretrained Deeplab and k-Means: Application to UAV-Captured Building Imagery.
Proceedings of the Pattern Recognition. ICPR International Workshops and Challenges, 2020

Wind: Wasserstein Inception Distance For Evaluating Generative Adversarial Network Performance.
Proceedings of the 2020 IEEE International Conference on Acoustics, 2020

2019
Images of the Athenian Sun: Highlights From ICIP 2018 in Greece [Conference Highlights].
IEEE Signal Process. Mag., 2019

Automatic Video Colorization Using 3D Conditional Generative Adversarial Networks.
Proceedings of the Advances in Visual Computing, 2019

Nuclei Detection Using Residual Attention Feature Pyramid Networks.
Proceedings of the 19th IEEE International Conference on Bioinformatics and Bioengineering, 2019

2018
Curriculum learning of visual attribute clusters for multi-task classification.
Pattern Recognit., 2018

Tomographic Image Reconstruction with a Spatially Varying Gamma Mixture Prior.
J. Math. Imaging Vis., 2018

DETCIC: Detection of Elongated Touching Cells with Inhomogeneous Illumination using a Stack of Conditional Random Fields.
Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2018), 2018

SPICE: Superpixel Classification for Cell Detection and Counting.
Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2018), 2018

Robust Incremental Hidden Conditional Random Fields for Human Action Recognition.
Proceedings of the Advances in Visual Computing - 13th International Symposium, 2018

Sipakmed: A New Dataset for Feature and Image Based Classification of Normal and Pathological Cervical Cells in Pap Smear Images.
Proceedings of the 2018 IEEE International Conference on Image Processing, 2018

On the Fusion of RGB and Depth Information for Hand Pose Estimation.
Proceedings of the 2018 IEEE International Conference on Image Processing, 2018

2017
Identifying Human Behaviors Using Synchronized Audio-Visual Cues.
IEEE Trans. Affect. Comput., 2017

Real time visual tracking using a spatially weighted von Mises mixture model.
Pattern Recognit. Lett., 2017

A survey of document image word spotting techniques.
Pattern Recognit., 2017

Semicca: A new semi-supervised probabilistic CCA model for keyword spotting.
Proceedings of the 2017 IEEE International Conference on Image Processing, 2017

Inferring Human Activities Using Robust Privileged Probabilistic Learning.
Proceedings of the 2017 IEEE International Conference on Computer Vision Workshops, 2017

Curriculum Learning for Multi-task Classification of Visual Attributes.
Proceedings of the 2017 IEEE International Conference on Computer Vision Workshops, 2017

MAP tomographic reconstruction with a spatially adaptive hierarchical image model.
Proceedings of the 25th European Signal Processing Conference, 2017

2016
Bayesian Multiview Manifold Learning Applied to Hippocampus Shape and Clinical Score Data.
Proceedings of the Medical Computer Vision and Bayesian and Graphical Models for Biomedical Imaging, 2016

DeTEC: Detection of Touching Elongated Cells in SEM Images.
Proceedings of the Advances in Visual Computing - 12th International Symposium, 2016

Age Classification from Facial Images: Is Frontalization Necessary?
Proceedings of the Advances in Visual Computing - 12th International Symposium, 2016

iRay: Mobile AR Using Structure Sensor.
Proceedings of the 2016 IEEE International Symposium on Mixed and Augmented Reality, 2016

Predicting privileged information for height estimation.
Proceedings of the 23rd International Conference on Pattern Recognition, 2016

Active privileged learning of human activities from weakly labeled samples.
Proceedings of the 2016 IEEE International Conference on Image Processing, 2016

Show me your body: Gender classification from still images.
Proceedings of the 2016 IEEE International Conference on Image Processing, 2016

Exploiting privileged information for facial expression recognition.
Proceedings of the International Conference on Biometrics, 2016

2015
Elimination of Outliers from 2-D Point Sets Using the Helmholtz Principle.
IEEE Signal Process. Lett., 2015

Inflammatory Cell Extraction and Nuclei Detection in Pap Smear Images.
Int. J. E Health Medical Commun., 2015

A Review of Human Activity Recognition Methods.
Frontiers Robotics AI, 2015

Visual tracking using spatially weighted likelihood of Gaussian mixtures.
Comput. Vis. Image Underst., 2015

Segmentation of cell clusters in Pap smear images using intensity variation between superpixels.
Proceedings of the International Conference on Systems, Signals and Image Processing, 2015

Tomographic image reconstruction withaspatially varying Gaussian mixture prior.
Proceedings of the 2015 IEEE International Conference on Image Processing, 2015

Shape encoding for edge map image compression.
Proceedings of the 2015 IEEE International Conference on Image Processing, 2015

Shape-based word spotting in handwritten document images.
Proceedings of the 13th International Conference on Document Analysis and Recognition, 2015

2014
Variational-Bayes Optical Flow.
J. Math. Imaging Vis., 2014

Robust maximum a posteriori image super-resolution.
J. Electronic Imaging, 2014

Modeling sets of unordered points using highly eccentric ellipses.
EURASIP J. Adv. Signal Process., 2014

Matching mixtures of curves for human action recognition.
Comput. Vis. Image Underst., 2014

Classifying Behavioral Attributes Using Conditional Random Fields.
Proceedings of the Artificial Intelligence: Methods and Applications, 2014

Splitting of overlapping nuclei guided by robust combinations of concavity points.
Proceedings of the Medical Imaging 2014: Image Processing, 2014

Global sampling of image edges.
Proceedings of the 2014 IEEE International Conference on Image Processing, 2014

Word Spotting in Handwritten Text Using Contour-Based Models.
Proceedings of the 14th International Conference on Frontiers in Handwriting Recognition, 2014

2013
Hierarchical Similarity Transformations Between Gaussian Mixtures.
IEEE Trans. Neural Networks Learn. Syst., 2013

Accurate image registration for MAP image super-resolution.
Signal Process. Image Commun., 2013

Action Recognition by Matching Clustered Trajectories of Motion Vectors.
Proceedings of the VISAPP 2013, 2013

Tex-Lex: Automated generation of texture lexicons using images from the world wide web.
Proceedings of the 18th International Conference on Digital Signal Processing, 2013

2012
Overlapping Cell Nuclei Segmentation Using a Spatially Adaptive Active Physical Model.
IEEE Trans. Image Process., 2012

Registering sets of points using Bayesian regression.
Neurocomputing, 2012

A novel framework for motion segmentation and tracking by clustering incomplete trajectories.
Comput. Vis. Image Underst., 2012

Feature-based 3D morphing based on geometrically constrained spherical parameterization.
Comput. Aided Geom. Des., 2012

Gaussian Mixture-based Mean Shift for Tracking under Abrupt Illumination Changes.
Proceedings of the Eighth International Conference on Intelligent Information Hiding and Multimedia Signal Processing, 2012

Visual Tracking by Weighted Likelihood Maximization.
Proceedings of the IEEE 24th International Conference on Tools with Artificial Intelligence, 2012

A probabilistic formulation of the optical flow problem.
Proceedings of the 21st International Conference on Pattern Recognition, 2012

Fast and efficient vanishing point detection in indoor images.
Proceedings of the 21st International Conference on Pattern Recognition, 2012

A fully robust framework for MAP image super-resolution.
Proceedings of the 19th IEEE International Conference on Image Processing, 2012

Cervical Cell Classification Based Exclusively on Nucleus Features.
Proceedings of the Image Analysis and Recognition - 9th International Conference, 2012

2011
Automated Detection of Cell Nuclei in Pap Smear Images Using Morphological Reconstruction and Clustering.
IEEE Trans. Inf. Technol. Biomed., 2011

Combining shape, texture and intensity features for cell nuclei extraction in Pap smear images.
Pattern Recognit. Lett., 2011

Visual tracking using the Earth Mover's Distance between Gaussian mixtures and Kalman filtering.
Image Vis. Comput., 2011

Motion Segmentation by Model-Based Clustering of Incomplete Trajectories.
Proceedings of the Machine Learning and Knowledge Discovery in Databases, 2011

A split-and-merge framework for 2D shape summarization.
Proceedings of the 7th International Symposium on Image and Signal Processing and Analysis, 2011

Cell nuclei segmentation by learning a physically based deformable model.
Proceedings of the 17th International Conference on Digital Signal Processing, 2011

Guiding optical flow estimation using superpixels.
Proceedings of the 17th International Conference on Digital Signal Processing, 2011

On the improvement of image registration for high accuracy super-resolution.
Proceedings of the IEEE International Conference on Acoustics, 2011

Majorization-minimization mixture model determination in image segmentation.
Proceedings of the 24th IEEE Conference on Computer Vision and Pattern Recognition, 2011

2010
A Bayesian Framework for Image Segmentation With Spatially Varying Mixtures.
IEEE Trans. Image Process., 2010

Spatially Varying Mixtures Incorporating Line Processes for Image Segmentation.
J. Math. Imaging Vis., 2010

Visual Tracking by Adaptive Kalman Filtering and Mean Shift.
Proceedings of the Artificial Intelligence: Theories, 2010

Feature-based 3D morphing based on geometrically constrained sphere mapping optimization.
Proceedings of the 2010 ACM Symposium on Applied Computing (SAC), 2010

Multiple Atlas Inference and Population Analysis Using Spectral Clustering.
Proceedings of the 20th International Conference on Pattern Recognition, 2010

Accurate Localization of Cell Nuclei in PAP Smear Images using Gradient Vector Flow Deformable Models.
Proceedings of the BIOSIGNALS 2010, 2010

2009
Heartbeat Time Series Classification With Support Vector Machines.
IEEE Trans. Inf. Technol. Biomed., 2009

The mixtures of Student's t-distributions as a robust framework for rigid registration.
Image Vis. Comput., 2009

Joint recovery and segmentation of polarimetric images using a compound MRF and mixture modeling.
Proceedings of the International Conference on Image Processing, 2009

2008
A Regression Mixture Model with Spatial Constraints for Clustering Spatiotemporal Data.
Int. J. Artif. Intell. Tools, 2008

MR Brain Tissue Classification Using an Edge-Preserving Spatially Variant Bayesian Mixture Model.
Proceedings of the Medical Image Computing and Computer-Assisted Intervention, 2008

A spatially adaptive hierarchical stochastic model for non-rigid image registration.
Proceedings of the 2008 16th European Signal Processing Conference, 2008

Edge preserving spatially varying mixtures for image segmentation.
Proceedings of the 2008 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR 2008), 2008

2007
A Class-Adaptive Spatially Variant Mixture Model for Image Segmentation.
IEEE Trans. Image Process., 2007

Curve Clustering with Spatial Constraints for Analysis of Spatiotemporal Data.
Proceedings of the 19th IEEE International Conference on Tools with Artificial Intelligence (ICTAI 2007), 2007

Robust Image Segmentation with Mixtures of Student's t-Distributions.
Proceedings of the International Conference on Image Processing, 2007

Rigid Image Registration based on Pixel Grouping.
Proceedings of the 14th International Conference on Image Analysis and Processing (ICIAP 2007), 2007

Robust Image Registration using Mixtures of t-distributions.
Proceedings of the IEEE 11th International Conference on Computer Vision, 2007

2006
Information theory-based shot cut/fade detection and video summarization.
IEEE Trans. Circuits Syst. Video Technol., 2006

Image segmentation with a class-adaptive spatially constrained mixture model.
Proceedings of the 14th European Signal Processing Conference, 2006

Robustness of Support Vector Machine-based Classification of Heart Rate Signals.
Proceedings of the 28th International Conference of the IEEE Engineering in Medicine and Biology Society, 2006

2004
Probabilistic multiple face detection and tracking using entropy measures.
IEEE Trans. Circuits Syst. Video Technol., 2004

2003
A global energy function for the alignment of serially acquired slices.
IEEE Trans. Inf. Technol. Biomed., 2003

2002
3D Volume Reconstruction by Serially Acquired 2D Slices Using a Distance Transform-Based Global Cost Function.
Proceedings of the Methods and Applications of Artificial Intelligence, 2002

Entropy metrics used for video summarization.
Proceedings of the 18th Spring Conference on Computer Graphics, 2002

3D physics-based reconstruction of serially acquired slices.
Proceedings of the 2002 IEEE International Conference on Multimedia and Expo, 2002

Information theory-based analysis of partial and total occlusion in object tracking.
Proceedings of the 2002 International Conference on Image Processing, 2002

An information theoretic approach to joint probabilistic face detection and tracking.
Proceedings of the 2002 International Conference on Image Processing, 2002

Shot detection in video sequences using entropy based metrics.
Proceedings of the 2002 International Conference on Image Processing, 2002

2001
A Physically-based Statistical Deformable Model for Brain Image Analysis.
IEEE Trans. Medical Imaging, 2001

2000
Construction of a 3D Physically-Based Multi-Object Deformable Model.
Proceedings of the 2000 International Conference on Image Processing, 2000

A Physically-Based Statistical Deformable Model for Brain Image Analysis.
Proceedings of the Computer Vision - ECCV 2000, 6th European Conference on Computer Vision, Dublin, Ireland, June 26, 2000

1999
Robust voxel similarity metrics for the registration of dissimilar single and multimodal images.
Pattern Recognit., 1999

Probabilistic multiobject deformable model for MR/SPECT brain image registration and segmentation.
Proceedings of the Medical Imaging 1999: Image Processing, 1999

1998
Single- and multimodal subvoxel registration of dissimilar medical images using robust similarity measures.
Proceedings of the Medical Imaging 1998: Image Processing, 1998

Multimodal Image Registration using Statistically Constrained Deformable Multimodels.
Proceedings of the 1998 IEEE International Conference on Image Processing, 1998

Robust Registration of Dissimilar Single and Multimodal Images.
Proceedings of the Computer Vision, 1998


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