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Computer Science
Czechia
2026

D-Index & Metrics

Computer Science

D-Index
48
Citations
8644
World Ranking
6210
National Ranking
10

Research.com Recognitions

  • 2026 - Research.com Computer Science in Czechia Leader Award

Overview

Ondrej Krejcar is affiliated with the University of Hradec Králové in the Czech Republic. Their research primarily spans the fields of Computer Science and Engineering, with a substantial focus on subfields such as Computer Vision and Pattern Recognition, Artificial Intelligence, Electrical and Electronic Engineering, Cognitive Neuroscience, and Computer Networks and Communications.

Their work covers several specialized topics including EEG and Brain-Computer Interfaces, Network Security and Intrusion Detection, Fractal and DNA sequence analysis, Advanced Malware Detection Techniques, Neural dynamics and brain function, Brain Tumor Detection and Classification, and Face and Expression Recognition.

Krejcar has contributed extensively to the scientific literature with notable recent papers such as:

  • Future Trends and Current State of Smart City Concepts: A Survey, 2020, IEEE Access
  • DeprNet: A Deep Convolution Neural Network Framework for Detecting Depression Using EEG, 2021, IEEE Transactions on Instrumentation and Measurement
  • Facial Expression Recognition Using Local Gravitational Force Descriptor-Based Deep Convolution Neural Networks, 2020, IEEE Transactions on Instrumentation and Measurement
  • Multiclass Prediction Model for Student Grade Prediction Using Machine Learning, 2021, IEEE Access
  • Deep Learning for Phishing Detection: Taxonomy, Current Challenges and Future Directions, 2022, IEEE Access

Krejcar frequently publishes in venues such as:

  • Fractals
  • IEEE Access
  • IEEE Transactions on Instrumentation and Measurement
  • Sensors
  • Fluctuation and Noise Letters

Collaboration has formed a significant part of their research efforts, with recurring co-authors including Ali Selamat, Hamidreza Namazi, Ayan Seal, Vimal Bhatia, and Debotosh Bhattacharjee.

Best Publications

  • Future Trends and Current State of Smart City Concepts: A Survey

    Ayca Kirimtat;Ondrej Krejcar;Attila Kertesz;M. Fatih Tasgetiren

  • Breast Cancer Detection Using Infrared Thermal Imaging and a Deep Learning Model.

    Sebastien Jean Mambou;Petra Maresova;Ondrej Krejcar;Ali Selamat

  • Consequences of Industry 4.0 in Business and Economics

    Petra Maresova;Ivan Soukal;Libuse Svobodova;Martina Hedvicakova

  • Industry 4.0 for the construction industry: how ready is the industry?

    Raihan Maskuriy;Ali Selamat;Kherun Nita Ali;Petra Maresova

  • DeprNet: A Deep Convolution Neural Network Framework for Detecting Depression Using EEG

    Ayan Seal;Rishabh Bajpai;Jagriti Agnihotri;Anis Yazidi

  • Deep Learning for Phishing Detection: Taxonomy, Current Challenges and Future Directions

    Unknown

  • Industry 4.0 for the Construction Industry: Review of Management Perspective

    Raihan Maskuriy;Ali Selamat;Petra Maresova;Ondrej Krejcar

  • Facial Expression Recognition Using Local Gravitational Force Descriptor-Based Deep Convolution Neural Networks

    Karnati Mohan;Ayan Seal;Ondrej Krejcar;Anis Yazidi

  • Multiclass Prediction Model for Student Grade Prediction Using Machine Learning

    Siti Dianah Abdul Bujang;Ali Selamat;Roliana Ibrahim;Ondrej Krejcar

  • Understanding Deep Learning Techniques for Recognition of Human Emotions Using Facial Expressions: A Comprehensive Survey

    Unknown

  • A review of infrared thermography for the investigation of building envelopes: Advances and prospects

    Ayca Kirimtat;Ondrej Krejcar

  • A combined negative selection algorithm-particle swarm optimization for an email spam detection system

    Ismaila Idris;Ali Selamat;Ali Selamat;Ngoc Thanh Nguyen;Sigeru Omatu

  • Multi-objective energy and daylight optimization of amorphous shading devices in buildings

    Ayca Kirimtat;Ondrej Krejcar;Berk Ekici;M. Fatih Tasgetiren

  • Modified frequency-based term weighting schemes for text classification

    Thabit Sabbah;Thabit Sabbah;Ali Selamat;Ali Selamat;Hafiz Selamat;Fawaz S. Al-Anzi

  • Digital Learning Demand for Future Education 4.0—Case Studies at Malaysia Education Institutions

    Siti Dianah Abdul Bujang;Ali Selamat;Ondrej Krejcar;Petra Maresova

  • Multilayer Framework for Botnet Detection Using Machine Learning Algorithms

    Wan Nur Hidayah Ibrahim;Syahid Anuar;Ali Selamat;Ondrej Krejcar

  • Polyp-Net: A Multimodel Fusion Network for Polyp Segmentation

    Debapriya Banik;Kaushiki Roy;Debotosh Bhattacharjee;Mita Nasipuri

  • FLEPNet: Feature Level Ensemble Parallel Network for Facial Expression Recognition

    Unknown

  • A deep CNN model for anomaly detection and localization in wireless capsule endoscopy images.

    Samir Jain;Ayan Seal;Aparajita Ojha;Anis Yazidi

  • Use of mobile phones as intelligent sensors for sound input analysis and sleep state detection.

    Ondrej Krejcar;Jakub Jirka;Dalibor Janckulik

  • LieNet: A Deep Convolution Neural Networks Framework for Detecting Deception

    Mohan Karnati;Ayan Seal;Anis Yazidi;Ondrej Krejcar

  • Complex Biomedical System with Mobile Clients

    Ondrej Krejcar;Dalibor Janckulik;Leona Motalova

  • Mobile Monitoring Stations and Web Visualization of Biotelemetric System - Guardian II

    Ondrej Krejcar;Dalibor Janckulik;Leona Motalova;Jan Kufel

  • Problem solving of low data throughput on mobile devices by artefacts prebuffering

    Ondrej Krejcar

  • Modern smart device-based concept of sensoric networks

    Miroslav Behan;Ondrej Krejcar

Frequent Co-Authors

Ali Selamat
Ali Selamat University of Technology Malaysia
Enrique Herrera-Viedma
Enrique Herrera-Viedma University of Granada
Hamido Fujita
Hamido Fujita University of Technology Malaysia
Mita Nasipuri
Mita Nasipuri Jadavpur University
Kamel A. Abd-Elsalam
Kamel A. Abd-Elsalam Agricultural Research Center
João Paulo Teixeira
João Paulo Teixeira University of Porto
Mohammed Rafiq Abdul Kadir
Mohammed Rafiq Abdul Kadir University of Technology Malaysia
Vaclav Snasel
Vaclav Snasel VSB – Technical University of Ostrava

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