Theoharis Theoharis

Affiliations:
  • Norwegian University of Science and Technology, Department of Computer Science, Trondheim, Norway
  • National University of Athens, Department of Informatics, Greece


According to our database1, Theoharis Theoharis authored at least 129 papers between 1987 and 2024.

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Bibliography

2024
Towards multi-view consistency in neural ray fields using parametric medial surfaces.
Comput. Graph., 2024

2023
MARF: The Medial Atom Ray Field object representation.
Comput. Graph., October, 2023

2022
FoR<sup>2</sup>M: Recognition and Repair of Foldings in Mesh Surfaces. Application to 3D Object Degradation.
CoRR, 2022

Multimodal registration across 3D point clouds and CT-volumes.
Comput. Graph., 2022

Foreword to the Special Section on 3D Object Retrieval 2022 Symposium (3DOR2022).
Comput. Graph., 2022

2021
Robust 3D Face Reconstruction Using One/Two Facial Images.
J. Imaging, 2021

Cross-time registration of 3D point clouds.
Comput. Graph., 2021

Partial 3D object retrieval using local binary QUICCI descriptors and dissimilarity tree indexing.
Comput. Graph., 2021

Fast and accurate GPU-accelerated, high-resolution 3D registration for the robotic 3D reconstruction of compliant food objects.
Comput. Electron. Agric., 2021

D4FLY Multimodal Biometric Database: multimodal fusion evaluation envisaging on-the-move biometric-based border control.
Proceedings of the 17th IEEE International Conference on Advanced Video and Signal Based Surveillance, 2021

2020
Image-Based Somatotype as a Biometric Trait for Non-Collaborative Person Recognition at a Distance and On-The-Move.
Sensors, 2020

An Indexing Scheme and Descriptor for 3D Object Retrieval Based on Local Shape Querying.
CoRR, 2020

Radial Intersection Count Image: a Clutter Resistant 3D Shape Descriptor.
CoRR, 2020

Foreword to the special section on 3D Object Retrieval 2020 workshop (3DOR2020).
Comput. Graph., 2020

An application independent review of multimodal 3D registration methods.
Comput. Graph., 2020

An indexing scheme and descriptor for 3D object retrieval based on local shape querying .
Comput. Graph., 2020

Radial intersection count image: A clutter resistant 3D shape descriptor .
Comput. Graph., 2020

2019
Unsupervised human action retrieval using salient points in 3D mesh sequences.
Multim. Tools Appl., 2019

An Analytical Evaluation of Data Dependence Analysis Techniques.
Int. J. Parallel Program., 2019

Effective Descriptors for Human Action Retrieval from 3D Mesh Sequences.
Int. J. Image Graph., 2019

Foreword to the Special Section on 3D Object Retrieval (3DOR2018).
Comput. Graph., 2019

2018
Action unit detection in 3D facial videos with application in facial expression retrieval and recognition.
Multim. Tools Appl., 2018

Spatially sensitive statistical shape analysis for pedestrian recognition from LIDAR data.
Comput. Vis. Image Underst., 2018

Looking beyond appearances: Synthetic training data for deep CNNs in re-identification.
Comput. Vis. Image Underst., 2018

Survey of automated multiple sclerosis lesion segmentation techniques on magnetic resonance imaging.
Comput. Medical Imaging Graph., 2018

Ensemble of PANORAMA-based convolutional neural networks for 3D model classification and retrieval.
Comput. Graph., 2018

Quasi Spin Images.
Proceedings of the 31st Norsk Informatikkonferanse, 2018

Microshapes: Efficient Querying of 3D Object Collections based on Local Shape.
Proceedings of the 11th Eurographics Workshop on 3D Object Retrieval, 2018

2017
Unsupervised Spectral Mesh Segmentation Driven by Heterogeneous Graphs.
IEEE Trans. Pattern Anal. Mach. Intell., 2017

On the retrieval of 3D mesh sequences of human actions.
Multim. Tools Appl., 2017

Part-based 3D object retrieval via multi-label optimization.
Comput. Vis. Image Underst., 2017

3D-2D face recognition with pose and illumination normalization.
Comput. Vis. Image Underst., 2017

Exploiting the PANORAMA Representation for Convolutional Neural Network Classification and Retrieval.
Proceedings of the 10th Eurographics Workshop on 3D Object Retrieval, 2017

2016
A spatio-temporal wavelet-based descriptor for dynamic 3D facial expression retrieval and recognition.
Vis. Comput., 2016

A robust spatio-temporal scheme for dynamic 3D facial expression retrieval.
Vis. Comput., 2016

An effective methodology for dynamic 3D facial expression retrieval.
Pattern Recognit., 2016

On the use of fingernail images as transient biometric identifiers - Biometric recognition using fingernail images.
Mach. Vis. Appl., 2016

Partial matching of 3D cultural heritage objects using panoramic views.
Multim. Tools Appl., 2016


2015
Face Recognition, 3D-Based.
Proceedings of the Encyclopedia of Biometrics, Second Edition, 2015

Erratum to: A survey on facial expression recognition in 3D video sequences.
Multim. Tools Appl., 2015

A survey on facial expression recognition in 3D video sequences.
Multim. Tools Appl., 2015

A comprehensive overview of methodologies and performance evaluation frameworks in 3D mesh segmentation.
Comput. Vis. Image Underst., 2015

EEG Biometrics: On the Use of Occipital Cortex Based Features from Visual Evoked Potentials.
Proceedings of the 28th Norsk Informatikkonferanse, 2015

A Spatio-Temporal Descriptor for Dynamic 3D Facial Expression Retrieval and Recognition.
Proceedings of the 8th Eurographics Workshop on 3D Object Retrieval, 2015

2014
Pose normalization of 3D models via reflective symmetry on panoramic views.
Vis. Comput., 2014

Feature fusion for facial landmark detection.
Pattern Recognit., 2014

Towards the Creation of Digital Stones from 2D Samples.
Proceedings of the 12th Eurographics Workshop on Graphics and Cultural Heritage, 2014

GeoTopo: Dynamic 3D Facial Expression Retrieval Using Topological and Geometric Information.
Proceedings of the 7th Eurographics Workshop on 3D Object Retrieval, 2014

Querying 3D Mesh Sequences for Human Action Retrieval.
Proceedings of the 2nd International Conference on 3D Vision, 2014

2013
3D object retrieval via range image queries in a bag-of-visual-words context.
Vis. Comput., 2013

3D Facial Landmark Detection under Large Yaw and Expression Variations.
IEEE Trans. Pattern Anal. Mach. Intell., 2013

A new user-friendly visual environment for breast MRI data analysis.
Comput. Methods Programs Biomed., 2013

UHDB11 Database for 3D-2D Face Recognition.
Proceedings of the Image and Video Technology - 6th Pacific-Rim Symposium, 2013

3D Object Partial Matching Using Panoramic Views.
Proceedings of the New Trends in Image Analysis and Processing - ICIAP 2013, 2013

Transient biometrics using finger nails.
Proceedings of the IEEE Sixth International Conference on Biometrics: Theory, 2013

SymPan: 3D Model Pose Normalization via Panoramic Views and Reflective Symmetry.
Proceedings of the 6th Eurographics Workshop on 3D Object Retrieval, 2013

2012
Non-rigid 3D object retrieval using topological information guided by conformal factors.
Vis. Comput., 2012

3D mesh video retrieval: A survey.
Proceedings of the 3DTV-Conference 2012: The True Vision, 2012

3D Object Retrieval via Range Image Queries based on SIFT descriptors on Panoramic Views.
Proceedings of the 5th Eurographics Workshop on 3D Object Retrieval, 2012

2011
Preface to special issue on 3DOR 2010.
Vis. Comput., 2011

Using Facial Symmetry to Handle Pose Variations in Real-World 3D Face Recognition.
IEEE Trans. Pattern Anal. Mach. Intell., 2011

Parameter Identification of 1D Recurrent Fractal Interpolation Functions with Applications to Imaging and Signal Processing.
J. Math. Imaging Vis., 2011

ROSy+: 3D Object Pose Normalization Based on PCA and Reflective Object Symmetry with Application in 3D Object Retrieval.
Int. J. Comput. Vis., 2011

UR3D-C: Linear dimensionality reduction for efficient 3D face recognition.
Proceedings of the 2011 IEEE International Joint Conference on Biometrics, 2011

ConTopo: Non-Rigid 3D Object Retrieval using Topological Information guided by Conformal Factors.
Proceedings of the 4th Eurographics Workshop on 3D Object Retrieval, 2011

Face Recognition Using 3D Images.
Proceedings of the Handbook of Face Recognition, 2nd Edition., 2011

2010
Preface.
Vis. Comput., 2010

Ethnicity- and Gender-based Subject Retrieval Using 3-D Face-Recognition Techniques.
Int. J. Comput. Vis., 2010

IJCV Special Issue on 3D Object Retrieval - Foreword by the Guest Editors.
Int. J. Comput. Vis., 2010

PANORAMA: A 3D Shape Descriptor Based on Panoramic Views for Unsupervised 3D Object Retrieval.
Int. J. Comput. Vis., 2010

Bidirectional relighting for 3D-aided 2D face recognition.
Proceedings of the Twenty-Third IEEE Conference on Computer Vision and Pattern Recognition, 2010

2009
Face Recognition, 3D-Based.
Proceedings of the Encyclopedia of Biometrics, 2009

Parameter identification of 1D fractal interpolation functions using bounding volumes.
J. Comput. Appl. Math., 2009

An application of the inpainting algorithm for recovering packet losses from transmitting sequential quad tree compressed images over wireless sensor networks.
Proceedings of the 2nd IFAC International Conference on Intelligent Control Systems and Signal Processing, 2009

Automatic 3D Facial Region Retrieval from Multi-pose Facial Datasets.
Proceedings of the 2nd Eurographics Workshop on 3D Object Retrieval, 2009

2008
3D Object Retrieval: Inter-Class vs. Intra-Class.
Proceedings of the Artificial Intelligence Techniques for Computer Graphics, 2008

Curve Fitting by Fractal Interpolation.
Trans. Comput. Sci., 2008

Unified 3D face and ear recognition using wavelets on geometry images.
Pattern Recognit., 2008

SHREC'08 entry: 2D/3D hybrid.
Proceedings of the 2008 International Conference on Shape Modeling and Applications (SMI 2008), 2008

Hardware Acceleration for 3D Image Reconstruction.
Proceedings of the Panhellenic Conference on Informatics, 2008

Near Real-Time 3D Reconstruction from InIm Video Stream.
Proceedings of the Image Analysis and Recognition, 5th International Conference, 2008

Profile-based face recognition.
Proceedings of the 8th IEEE International Conference on Automatic Face and Gesture Recognition (FG 2008), 2008

Volume Data Visualization Using Fractal Interpolation Surfaces.
Proceedings of the 29th Annual Conference of the European Association for Computer Graphics, 2008

CIL3D: a content-based 3D model search engine.
Proceedings of the Third International Conference on Digital Interactive Media in Entertainment and Arts, 2008

3D Object Retrieval using an Efficient and Compact Hybrid Shape Descriptor .
Proceedings of the 1st Eurographics Workshop on 3D Object Retrieval, 2008

2007
PTK: A novel depth buffer-based shape descriptor for three-dimensional object retrieval.
Vis. Comput., 2007

Efficient 3D shape matching and retrieval using a concrete radialized spherical projection representation.
Pattern Recognit., 2007

Intraclass Retrieval of Nonrigid 3D Objects: Application to Face Recognition.
IEEE Trans. Pattern Anal. Mach. Intell., 2007

Three-Dimensional Face Recognition in the Presence of Facial Expressions: An Annotated Deformable Model Approach.
IEEE Trans. Pattern Anal. Mach. Intell., 2007

General Voxelization Algorithm with Scalable GPU Implementation.
J. Graph. Tools, 2007

Effective Representation of 2D and 3D Data Using Fractal Interpolation.
Proceedings of the 2007 International Conference on Cyberworlds, 2007

Fractal Active Shape Models.
Proceedings of the Computer Analysis of Images and Patterns, 12th International Conference, 2007

Towards fast 3D ear recognition for real-life biometric applications.
Proceedings of the Fourth IEEE International Conference on Advanced Video and Signal Based Surveillance, 2007

2006
3D Object Repair Using 2D Algorithms.
Proceedings of the Computational Science, 2006

3D Face Recognition.
Proceedings of the British Machine Vision Conference 2006, 2006

2005
Statistical algorithms for long DNA sequences: Oligonucleotide distributions and homogeneity maps.
Sci. Program., 2005

Evaluation of 3D Face Recognition in the presence of facial expressions: an Annotated Deformable Model approach.
Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2005

8D-THERMO CAM: Combination of Geometry with Physiological Information for Face Recognition.
Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR 2005), 2005

Multimodal Face Recognition: Combination of Geometry with Physiological Information.
Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR 2005), 2005

2004
Efficient 3D object retrieval using depth images.
Proceedings of the 6th ACM SIGMM International Workshop on Multimedia Information Retrieval, 2004

Simplification of Vector Fields over Tetrahedral Meshes.
Proceedings of the 2004 Computer Graphics International (CGI 2004), 16-19 June 2004, 2004

Efficient Hardware Voxelization.
Proceedings of the 2004 Computer Graphics International (CGI 2004), 16-19 June 2004, 2004

2003
Fast Ray-Tetrahedron Intersection Using Plucker Coordinates.
J. Graphics, GPU, & Game Tools, 2003

Progressive Hulls for Intersection Applications.
Comput. Graph. Forum, 2003

Exploiting multiresolution models to accelerate ray tracing.
Comput. Graph., 2003

An overview of parallel visualisation methods for Mandelbrot and Julia sets.
Comput. Graph., 2003

Fast Fragment Assemblage Using Boundary Line and Surface Matching.
Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2003

2002
Reconstruction of Three-Dimensional Objects through Matching of Their Parts.
IEEE Trans. Pattern Anal. Mach. Intell., 2002

2001
Virtual Archaeologist: Assembling the Past.
IEEE Computer Graphics and Applications, 2001

The magic of the Z-Buffer: A Survey.
Proceedings of the 9-th International Conference in Central Europe on Computer Graphics, 2001

Parallel Ray Tracing with 5D Adaptive Subdivision.
Proceedings of the 9-th International Conference in Central Europe on Computer Graphics, 2001

A Functional View of Parallel Computer Graphics.
Proceedings of the 2001 ACS / IEEE International Conference on Computer Systems and Applications (AICCSA 2001), 2001

2000
Stereo Matching Using Optic Flow.
Real Time Imaging, 2000

Segmentation and Surface Characterization of Arbitrary 3D Meshes for Object Reconstruction and Recognition.
Proceedings of the 15th International Conference on Pattern Recognition, 2000

Formal development of a reconfigurable tool for parallel DNA matching.
Proceedings of the 2000 7th IEEE International Conference on Electronics, 2000

1999
Intersection Test for Collision Detection in Particle Systems.
J. Graphics, GPU, & Game Tools, 1999

A Fast Depth-Buffer-Based Voxelization Algorithm.
J. Graphics, GPU, & Game Tools, 1999

NOEMON: Design, implementation and performance results of an intelligent assistant for classifier selection.
Intell. Data Anal., 1999

Formal Derivation of Two Parallel Rendering Algorithms.
Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications, 1999

1998
A texture controller.
Vis. Comput., 1998

Efficient integer algorithms for the generation of conic sections.
Comput. Graph., 1998

1997
Derivation of Efficient Parallel Algorithms on a Ring of Processors.
Proceedings of the IASTED International Conference on Parallel and Distributed Systems, 1997

1990
Implementation of matrix multiplication on the T-RACK.
Parallel Comput., 1990

Parallel processing for computer vision and display: P. M. Dew, R. A. Earnshaw, T. R. Heywood (eds) Addison-Wesley, Reading, MA, USA (1989) 503pp.
Comput. Aided Des., 1990

1989
Polygon rendering on a dual-paradigm parallel processor.
Comput. Graph., 1989

Algorithms for Parallel Polygon Rendering
Lecture Notes in Computer Science 373, Springer, ISBN: 3-540-51394-9, 1989

1988
Incremental Polygon Rendering on a SIMD Processor Array.
Comput. Graph. Forum, 1988

1987
Parallel Polygon Rendering with Precomputed Surface Patches.
Proceedings of the 8th European Computer Graphics Conference and Exhibition, 1987


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