Publications

Background-Masked Lightweight Approach for Pear Leaf Disease Recognition

Romiyal George, Selvarajah Thuseethan, Roshan G. Ragel, Sutharshan Rajasegarar, Mamoun Alazab, Hamish A. Campbell, John Yearwood

IEEE Access, Vol. 13, 2025

DOI: 10.1109/ACCESS.2025.3593413

Advancing suspicious object detection in unconstrained environments using computer vision

Kanagasabai Thiruthanigesan, Ruwan D. Nawarathna, Roshan G. Ragel

Applied Intelligence, Vol. 55(12), 2025

DOI: 10.1007/s10489-025-06753-2

Past, present and future of deep plant leaf disease recognition: A survey

Romiyal George, Selvarajah Thuseethan, Roshan G. Ragel, Kayathiri Mahendrakumaran, Sivaraj Nimishan, Chathrie Wimalasooriya, Mamoun Alazab

Computers and Electronics in Agriculture, Vol. 234, 2025

DOI: 10.1016/j.compag.2025.110128

Machine Learning and Deep Learning-Based Atmospheric Duct Interference Detection and Mitigation in TD-LTE Networks

Rasendram Muralitharan, Upul Jayasinghe, Roshan G. Ragel, Gyu Myoung Lee

Future Internet, Vol. 17(6), 2025

DOI: 10.3390/fi17060237

A Comparative Study on Generalized Automated Medical Image Segmentation for Dataset Building

Nishani Kasineshan, Vithurshini Subramanieam, Thulasiyan Yogeswaran, Sashini Liyanage, Isuri Devindi, Roshan G. Ragel, Vajira Thambawita, Isuru Nawinne

2025 5th International Conference on Advanced Research in Computing (ICARC), 2025

DOI: 10.1109/ICARC64760.2025.10963209

Simultaneous Localization and Mapping with Cost Effective Sensors

Dinuka Mudalige, Nipun Dharmarathne, Yojith Jayarathna, Nuwan Jaliyagoda, Akila Karunanayake, Roshan Ragel, Isuru Nawinne

2025 International Research Conference on Smart Computing and Systems Engineering (SCSE), 2025

DOI: 10.1109/SCSE65633.2025.11030968

Multimodal Deep Convolutional Neural Network Pipeline for AI-Assisted Early Detection of Oral Cancer

G. A. I. Devindi, D. M. D. R. Dissanayake, S. N. Liyanage, F. B. A. H. Francis, M. B. D. Pavithya, N. S. Piyarathne, P. V. K. S. Hettiarachchi, R. M. S. G. K. Rasnayaka, Ruwan Duminda Jayasinghe, Roshan G. Ragel, Isuru Nawinne

IEEE Access, Vol. 12, 2024

DOI: 10.1109/ACCESS.2024.3454338

Deep Learning Model for Tamil Part-of-Speech Tagging

Hemakasiny Visuwalingam, Ratnasingam Sakuntharaj, Janaka Alawatugoda, Roshan G. Ragel

Computer Journal, Vol. 67(8), 2024

DOI: 10.1093/comjnl/bxae033

Comparative Analysis of Pre-trained Deep Neural Networks for Plant Disease Classification

Romiyal George, Selvarajah Thuseethan, Roshan G. Ragel

JCSSE 2024: 179-186

DOI: 10.1109/JCSSE61278.2024.10613633

DeepSelectNet: deep neural network based selective sequencing for oxford nanopore sequencing

Anjana Senanayake, Hasindu Gamaarachchi, Damayanthi Herath, Roshan Ragel

BMC Bioinformatics, 2023

DOI: 10.1186/s12859-023-05151-0

Mixed-Reality Based Multi-Agent Robotics Framework for Artificial Swarm Intelligence Experiments

Dilshani Karunarathna, Nuwan Jaliyagoda, Ganindu Jayalath, Janaka Alawatugoda, Roshan Ragel, Isuru Nawinne

IEEE Access, 2023

DOI: 10.1109/ACCESS.2023.3317434

Cross Layer Design Using HW/SW Co-Design and HLS to Accelerate Chaining in Genomic Analysis

Kisaru Liyanage, Hasindu Gamaarachchi, Roshan G. Ragel, Sri Parameswaran

IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2023

DOI: 10.1109/TCAD.2023.3250827

Enhanced YOLOv4 for Facilitating Public Safety Management amidst Protests and Riots

K. Thiruthanigesan, Ruwan D. Nawarathna, Roshan G. Ragel

ICIIS 2023: 1-6

An optical physics inspired CNN approach for intrinsic image decomposition

Harshana Weligampola, Gihan Jayatilaka, Suren Sritharan, Parakrama Ekanayake, Roshan Ragel, Vijitha Herath, Roshan Godaliyadda

2021 IEEE International Conference on Image Processing (ICIP), 2021

DOI: 10.1109/ICIP42928.2021.9506375

Using Near-Infrared Spectroscopy for Vein Visualization

KTB Weerasinghe, SC Tennakoon, KNU Kularatne, I Nawinne, R Ragel, H Jayakody

2021 10th International Conference on Information and Automation for Sustainability (ICIAfS), 2021

DOI: 10.1109/ICIAfS52090.2021.9606126

Revealing MicroRNA Biomarkers for Alzheimer's Disease Using Next Generation Sequencing Data

Imalsha Dinuwanthi, Hasini Thilakarathna, Vidwa Sripadi, Damayanthi Herath, Roshan Ragel

2021 10th International Conference on Information and Automation for Sustainability (ICIAfS), 2021

DOI: 10.1109/ICIAfS52090.2021.9606093

A Retinex based GAN Pipeline to Utilize Paired and Unpaired Datasets for Enhancing Low Light Images

Harshana Weligampola, Gihan Jayatilaka, Suren Sritharan, Roshan Goldaliyadda, Parakrama Ekanayeka, Roshan Ragel, Vijitha Herath

MERCon, 2020

DOI: 10.1109/MERCon50084.2020.9185373

Genopo: a nanopore sequencing analysis toolkit for portable Android devices

Hiruna Samarakoon, Sanoj Punchihewa, Anjana Senanayake, Jillian M. Hammond, Igor Stevanovski, James M. Ferguson, Roshan Ragel, Hasindu Gamaarachchi, Ira W. Deveson

Communications Biology, 2020

DOI: 10.1038/s42003-020-01270-z

Control channel denial-of-service attack in SDN-based networks

Shriparen Sriskandarajah, Matthew McKague, Ernest Foo, Roshan G. Ragel, Suneth Namal Karunarathna

2020 Moratuwa Engineering Research Conference (MERCon), 2020

DOI: 10.1109/MERCon50084.2020.9185266

A Programming Framework for Robot Swarms

Mahendra Dassanayaka, Tharuka Bandara, Nadun Adikari, Isuru Nawinne, Roshan Ragel

2020 Moratuwa Engineering Research Conference (MERCon), 2020

DOI: 10.1109/MERCon50084.2020.9185206

Detection of Novel Biomarker Genes of Alzheimer's Disease Using Gene Expression Data

Shehan Perera, Kaveesha Hewage, Chamara Gunarathne, Rajitha Navarathna, Damayanthi Herath, Roshan G Ragel

2020 Moratuwa Engineering Research Conference (MERCon), 2020

DOI: 10.1109/MERCon50084.2020.9185336

Non-contact Infant Sleep Apnea Detection

Gihan Jayatilaka, Harshana Weligampola, Suren Sritharan, Pankayaraj Pathmanathan, Roshan Ragel, Isuru Nawinne

IEEE International Conference on Industrial and Information Systems (ICIIS), 2019

DOI: 10.1109/ICIIS47346.2019.9063269

Power-Aware High-Level Synthesis Flow for Mapping FPGA Designs

Udaree Kanewala, Kesara Gamlath, Hasindu Ramanayake, Kalindu Herath, Isuru Nawinne, Roshan Ragel

2019 Moratuwa Engineering Research Conference (MERCon), 2019

DOI: 10.1109/MERCon.2019.8818883

An ensemble learning approach for electrocardiogram sensor based human emotion recognition

Theekshana Dissanayake, Yasitha Rajapaksha, Roshan Ragel, Isuru Nawinne

MDPI Sensors, 2019

DOI: 10.3390/s19204495

Visual Design Platform for Wireless Sensor Network

Rosen Silva, Asela Dasanayaka, Roshan Ragel, Asitha Bandaranayake

2018 Moratuwa Engineering Research Conference (MERCon), 2018

DOI: 10.1109/MERCon.2018.8421896

Implementing a proven-secure and cost-effective countermeasure against the compression ratio info-leak mass exploitation (CRIME) attack

Jayamine Alupotha, Sanduni Prasadi, Janaka Alawatugoda, Roshan Ragel, Mohamed Fawsan

2017 IEEE International Conference on Industrial and Information Systems (ICIIS), 2017

DOI: 10.1109/ICIINFS.2017.8300359

Affordable real-time environment monitoring system for greenhouses

Supun Athukorala, Irunika Weeraratne, Dumindu Jayathilaka, Asitha Bandaranayake, Roshan Ragel

2016 Manufacturing & Industrial Engineering Symposium (MIES), 2016

DOI: 10.1109/MIES.2016.7780261

An optimized Parallel Failure-less Aho-Corasick algorithm for DNA sequence matching

DRVLB Thambawita, Roshan G Ragel, Dhammike Elkaduwe

2016 IEEE International Conference on Information and Automation for Sustainability (ICIAfS), 2016

DOI: 10.1109/ICIAFS.2016.7946533

To use or not to use: CPUs' cache optimization techniques on GPGPUs

DRVLB Thambawita, Roshan G Ragel, Dhammike Elkaduwe

2016 IEEE International Conference on Information and Automation for Sustainability (ICIAfS), 2016

DOI: 10.1109/ICIAFS.2016.7946534

On implementing a client-server setting to prevent the Browser Reconnaissance and Exfiltration via Adaptive Compression of Hypertext (BREACH) attacks

Isuru Sankalpa, Tharindu Dhanushka, Nadeesha Amarasinghe, Janaka Alawatugoda, Roshan Ragel

2016 Manufacturing & Industrial Engineering Symposium (MIES), 2016

DOI: 10.1109/MIES.2016.7780263

Leakage-resilient storage scheme for cryptographic applications

Janaka Alawatugoda, Roshan Ragel, Danushka Eranga, Nalaka Jayanath, Chinthaka Somathilaka

2016 IEEE International Conference on Information and Automation for Sustainability (ICIAfS), 2016

DOI: 10.1109/ICIAFS.2016.7946548

Accelerating k-nn classification algorithm using graphics processing units

S Selvaluxmiy, TN Kumara, P Keerthanan, R Velmakivan, R Ragel, S Deegalla

2016 IEEE International Conference on Information and Automation for Sustainability (ICIAfS), 2016

DOI: 10.1109/ICIAFS.2016.7946528

Exploring multilevel cache hierarchies in application specific mpsocs

Isuru Nawinne, Haris Javaid, Roshan Ragel, Swarnalatha Radhakrishnan, Sri Parameswaran

IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2015

DOI: 10.1109/TCAD.2015.2445736

Performance evaluation techniques for an automatic question answering system

Tilani Gunawardena, Nishara Pathirana, Medhavi Lokuhetti, Roshan Ragel, Sampath Deegalla

International Journal of Machine Learning and Computing, 2015

DOI: 10.7763/IJMLC.2015.V5.523

A structured hardware software architecture for peptide based diagnosis – Sub-string matching problem with limited tolerance

Sugandima M. Vidanagamachchi, S. Devapriya Dewasurendra, Roshan G. Ragel, Mahesan Niranjan

2014 7th International Conference on Information and Automation for Sustainability, 2014

DOI: 10.1109/ICIAFS.2014.7069624

To use or not to use: Graphics processing units (GPUs) for pattern matching algorithms

DRVLB Thambawita, Roshan Ragel, Dhammika Elkaduwe

7th International Conference on Information and Automation for Sustainability, 2014

DOI: 10.1109/ICIAFS.2014.7069585

Students behavioural analysis in an online learning environment using data mining

IP Ratnapala, RG Ragel, S Deegalla

7th International Conference on Information and Automation for Sustainability, 2014

DOI: 10.1109/ICIAFS.2014.7069609

Hardware software co-design of the Aho-Corasick algorithm: Scalable for protein identification?

S.M. Vidanagamachchi, S.D. Dewasurendra, R.G. Ragel

2013 IEEE 8th International Conference on Industrial and Information Systems, 2013

DOI: 10.1109/ICIInfS.2013.6732003

Hardware accelerated protein inference framework

S. M. Vidanagamachchi, S. D. Dewasurendra, R. G. Ragel

2013 IEEE 8th International Conference on Industrial and Information Systems, 2013

DOI: 10.1109/ICIInfS.2013.6732061

A Study on Instruction-set Selection Using Multi-application Based Application Specific Instruction-set Processors

Roshan G. Ragel, Swarnalatha Radhakrishnan, Jude Angelo Ambrose, Sri Parameswaran

2013 26th International Conference on VLSI Design, 2013

DOI: 10.1109/VLSID.2013.154

CSER: HW/SW configurable soft-error resiliency for application specific instruction-set processors

Tuo Li, Muhammad Shafique, Semeen Rehman, Swarnalatha Radhakrishnan, Roshan Ragel, Jude Angelo Ambrose, Jörg Henkel, Sri Parameswaran

2013 Design, Automation & Test in Europe Conference & Exhibition (DATE), 2013

DOI: 10.7873/DATE.2013.152

DRMA: dynamically reconfigurable MPSoC architecture

Lawrance Zhang, Jude Angelo Ambrose, Jorgen Peddersen, Sri Parameswaran, Roshan Ragel, Swarnalatha Radhakrishnan, Kewal K. Saluja

GLSVLSI '13: Proceedings of the 23rd ACM international conference on Great lakes symposium on VLSI, 2013

DOI: 10.1145/2483028.2483101

AntiPlag: Plagiarism detection on electronic submissions of text based assignments

MAC Jiffriya, MAC Akmal Jahan, Roshan G Ragel, Sampath Deegalla

2013 IEEE 8th International Conference on Industrial and Information Systems, 2013

DOI: 10.1109/ICIInfS.2013.6732013

Commentz-walter: Any better than aho-corasick for peptide identification?

SM Vidanagamachchi, SD Dewasurendra, RG Ragel, M Niranjan

International Journal of Research in Computer Science, 2012

DOI: 10.7815/ijorcs.26.2012.053

Instruction-set selection for multi-application based ASIP design: An instruction-level study

Roshan Ragel, Swarnalatha Radhakrishnan, Angelo Ambrose

2012 IEEE 6th International Conference on Information and Automation for Sustainability, 2012

DOI: 10.1109/ICIAFS.2012.6419895

DIMSim: A rapid two-level cache simulation approach for deadline-based MPSoCs

Mohammad Shihabul Haque, Roshan Ragel, Angelo Ambrose, Swarnalatha Radhakrishnan, Sri Parameswaran

8th IEEE/ACM/IFIP international conference on Hardware/software codesign and system synthesis, 2012

DOI: 10.1145/2380445.2380473

Constant time encryption as a countermeasure against remote cache timing attacks

Darshana Jayasinghe, Roshan Ragel, Dhammika Elkaduwe

2012 IEEE 6th International Conference on Information and Automation for Sustainability, 2012

DOI: 10.1109/ICIAFS.2012.6419893

Accelerating string matching for bio-computing applications on multi-core CPUs

Damayanthi Herath, Chathurika Lakmali, Roshan Ragel

2012 IEEE 7th International Conference on Industrial and Information Systems (ICIIS), 2012

DOI: 10.1109/ICIInfS.2012.6304784

Tile optimization for area in FPGA based hardware acceleration of peptide identification

SM Vidanagamachchi, SD Dewasurendra, Roshan G Ragel, M Niranjan

2011 6th International Conference on Industrial and Information Systems (ICIIS), 2011

DOI: 10.1109/ICIINFS.2011.6038056

Heterogeneous processor pipeline for a product cipher application

Isuru B. Nawinne, Mahanama S. Wickramasinghe, Roshan G. Ragel, Swarnalatha Radhakrishnan

2011 6th International Conference on Industrial and Information Systems, 2011

DOI: 10.1109/ICIINFS.2011.6038036

An automatic answering system with template matching for natural language questions

Tilani Gunawardena, Medhavi Lokuhetti, Nishara Pathirana, Roshan Ragel, Sampath Deegalla

2010 Fifth International Conference on Information and Automation for Sustainability, 2010

DOI: 10.1109/ICIAFS.2010.5715686

Loop unrolling in multi-pipeline ASIP design

HMRDB Navarathna, Swarnalatha Radhakrishnan, Roshan G Ragel

2009 International Conference on Industrial and Information Systems (ICIIS), 2009

DOI: 10.1109/ICIINFS.2009.5429845

Axis2UNO: Web Services Enabled OpenOffice.org

BANM Bambarasinghe, HMS Huruggamuwa, Roshan G Ragel, Swarnalatha Radhakrishnan

2008 4th International Conference on Information and Automation for Sustainability, 2008

DOI: 10.1109/ICIAFS.2008.4783956

IMPRES: integrated monitoring for processor reliability and security

Roshan G Ragel, Sri Parameswaran

Proceedings of the 43rd annual Design Automation Conference, 2006

DOI: 10.1145/1146909.1147041