World's Best Scientists 2026 revealed!

D-Index & Metrics

Computer Science

D-Index
38
Citations
5623
World Ranking
10312
National Ranking
32

Overview

Theoharis Theoharis is affiliated with the Norwegian University of Science and Technology in Norway and has contributed extensively to the fields of computer science and engineering. Their research primarily focuses on computer vision and pattern recognition, computational mechanics, and aerospace engineering, further exploring signal processing and biomedical engineering.

Their research touches on several core topics, including:

  • Robotics and Sensor-Based Localization
  • 3D Shape Modeling and Analysis
  • Image Processing and 3D Reconstruction
  • Image Retrieval and Classification Techniques
  • Advanced Image and Video Retrieval Techniques
  • Face recognition and analysis
  • Computer Graphics and Visualization Techniques

Theoharis Theoharis has authored numerous research papers, with a concentration in journals such as Computers & Graphics, where they have published nine papers. Other venues include Zenodo (CERN European Organization for Nuclear Research), Computers and Electronics in Agriculture, Journal of Imaging, and Sensors.

Recent published papers include:

  • "Radial intersection count image: A clutter resistant 3D shape descriptor" (2020) in Computers & Graphics
  • "An indexing scheme and descriptor for 3D object retrieval based on local shape querying" (2020) in Computers & Graphics
  • "Fast and accurate GPU-accelerated, high-resolution 3D registration for the robotic 3D reconstruction of compliant food objects" (2020) in Computers and Electronics in Agriculture
  • "Cross-time registration of 3D point clouds" (2021) in Computers & Graphics
  • "Partial 3D object retrieval using local binary QUICCI descriptors and dissimilarity tree indexing" (2021) in Computers & Graphics

Collaboration is a notable aspect of Theoharis's research. Frequent coauthors include Bart Iver van Blokland, with whom they have worked on four publications, Evdokia Saiti, also contributing to four papers, Peder Bergebakken Sundt and Antonios Danelakis, each involved in three joint publications, and Remco C. Veltkamp, with two collaborative works.

Best Publications

  • Three-Dimensional Face Recognition in the Presence of Facial Expressions: An Annotated Deformable Model Approach

    I.A. Kakadiaris;G. Passalis;G. Toderici;M.N. Murtuza

  • PANORAMA: A 3D Shape Descriptor Based on Panoramic Views for Unsupervised 3D Object Retrieval

    Panagiotis Papadakis;Ioannis Pratikakis;Theoharis Theoharis;Stavros Perantonis

  • Efficient 3D shape matching and retrieval using a concrete radialized spherical projection representation

    Panagiotis Papadakis;Ioannis Pratikakis;Stavros Perantonis;Theoharis Theoharis

  • Looking beyond appearances: Synthetic training data for deep CNNs in re-identification

    Igor Barros Barbosa;Marco Cristani;Barbara Caputo;Aleksander Rognhaugen

  • Using Facial Symmetry to Handle Pose Variations in Real-World 3D Face Recognition

    G. Passalis;P. Perakis;T. Theoharis;I. A. Kakadiaris

  • A fast depth-buffer-based voxelization algorithm

    Evaggelia-Aggeliki Karabassi;Georgios Papaioannou;Theoharis Theoharis

  • Reconstruction of three-dimensional objects through matching of their parts

    G. Papaioannou;E.-A. Karabassi;T. Theoharis

  • 3D Facial Landmark Detection under Large Yaw and Expression Variations

    P. Perakis;G. Passalis;T. Theoharis;I. A. Kakadiaris

  • NOEMON: Design, implementation and performance results of an intelligent assistant for classifier selection

    Alexandros Kalousis;Theoharis Theoharis

  • Evaluation of 3D Face Recognition in the presence of facial expressions: an Annotated Deformable Model approach

    G. Passalis;I.A. Kakadiaris;T. Theoharis;G. Toderici

  • Virtual Archaeologist: assembling the past

    G. Papaioannou;E.-A. Karabassi;T. Theoharis

  • Exploiting the PANORAMA Representation for Convolutional Neural Network Classification and Retrieval

    Konstantinos Sfikas;Theoharis Theoharis;Ioannis Pratikakis

  • 3D object retrieval using an efficient and compact hybrid shape descriptor

    P. Papadakis;I. Pratikakis;T. Theoharis;G. Passalis

  • Ensemble of PANORAMA-based convolutional neural networks for 3D model classification and retrieval

    Konstantinos Sfikas;Ioannis Pratikakis;Theoharis Theoharis

  • Unified 3D face and ear recognition using wavelets on geometry images

    Theoharis Theoharis;Georgios Passalis;George Toderici;Ioannis A. Kakadiaris

  • Survey of automated multiple sclerosis lesion segmentation techniques on magnetic resonance imaging.

    Antonios Danelakis;Theoharis Theoharis;Dimitrios A. Verganelakis

  • A comprehensive overview of methodologies and performance evaluation frameworks in 3D mesh segmentation

    Panagiotis Theologou;Ioannis Pratikakis;Theoharis Theoharis

  • 3D-2D face recognition with pose and illumination normalization

    Ioannis A. Kakadiaris;George Toderici;Georgios Evangelopoulos;Georgios Passalis

  • Eurographics Workshop on 3D Object Retrieval 2010

    Mohamed Daoudi;Schreck Tobias;Spagnuolo Michela;Pratikakis Ioannis

  • Multimodal face recognition: combination of geometry with physiological information

    I.A. Kakadiaris;G. Passalis;T. Theoharis;G. Toderici

  • Intraclass Retrieval of Nonrigid 3D Objects: Application to Face Recognition

    G. Passalis;I.A. Kakadiaris;T. Theoharis

Frequent Co-Authors

Ioannis Pratikakis
Ioannis Pratikakis Democritus University of Thrace
Ioannis A. Kakadiaris
Ioannis A. Kakadiaris University of Houston
George Toderici
George Toderici Google (United States)
Stavros J. Perantonis
Stavros J. Perantonis Demokritos National Centre for Scientific Research
Remco C. Veltkamp
Remco C. Veltkamp Utrecht University
Tobias Schreck
Tobias Schreck Graz University of Technology
Michela Spagnuolo
Michela Spagnuolo National Research Council (CNR)
Alexandru Telea
Alexandru Telea Utrecht University
George Nikolakopoulos
George Nikolakopoulos Luleå University of Technology
Anthony Tzes
Anthony Tzes New York University Abu Dhabi

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