Biography

Associated projects 1

• Computer Vision

  Hyperspectral Unmixing

  View project

Publications 9

1. LiteGAR: Input-Adaptive Fusion for Single-Stage Relational Reasoning in Group Activity Recognition

   Narthana Sivalingam, Santhirarajah Sivasthigan, Buddhi Wijenayake Roshan Godaliyadda, Vijitha Herath, Parakrama Ekanayake

   WACV 2027 · 2027

   Conference Accepted Lightweight Activity Understanding

2. A Controlled Benchmark of Visual State-Space Backbones with Domain-Shift and Boundary Analysis for Remote-Sensing Segmentation (opens in a new tab)

   Nichula Wasalathilaka, Dineth Perera, Oshadha Samarakoon, Buddhi Wijenayake, Roshan Godaliyadda, Vijitha Herath, Parakrama Ekanayake

   The International Geoscience and Remote Sensing Symposium (IGARSS) 2026 · 2026

   Conference Accepted Hyperspectral Unmixing DOI 10.48550/arXiv.2604.18721

3. Mamba-FCS: Joint Spatio-Frequency Feature Fusion, Change-Guided Attention, and SeK Inspired Loss for Enhanced Semantic Change Detection in Remote Sensing (opens in a new tab)

   Buddhi Wijenayake, Athulya Ratnayake, Praveen Sumanasekara, Roshan Godaliyadda, Parakrama Ekanayake, Vijitha Herath, Nichula Wasalathilaka

   IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing · 2026

   Journal Accepted Hyperspectral Unmixing DOI 10.1109/JSTARS.2026.3663066

4. Mitigating Long-Tail Bias via Prompt-Controlled Diffusion Augmentation (opens in a new tab)

   Buddhi Wijenayake, Nichula Wasalathilake, Roshan Godaliyadda, Vijitha Herath, Parakrama Ekanayake, Vishal M Patel

   The International Geoscience and Remote Sensing Symposium (IGARSS) 2026 · 2026

   Conference Accepted Hyperspectral Unmixing DOI 10.48550/arXiv.2602.04749

5. Preprocessing Algorithm Leveraging Geometric Modeling for Scale Correction in Hyperspectral Images for Improved Unmixing Performance (opens in a new tab)

   Praveen Sumanasekara, Athulya Ratnayake, Buddhi Wijenayake, Keshawa Ratnayake, Roshan Godaliyadda, Parakrama Ekanayake, Vijitha Herath

   IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing · 2026

   Journal Accepted Hyperspectral Unmixing DOI 10.1109/JSTARS.2026.3687834

6. Prompt Sensitivity or Evaluation Artifact? A Task-Aware Analysis for Large Language Models

   Sayumi Muthukumarana, Buddhi Wijenayake, R. Godaliyadda, P. Ekanayake

   Moratuwa Engineering Research Conference (MERCon) 2026 · 2026

   Conference Accepted Large Language Models (LLMs)

7. Devising PoPStat: A Metric Bridging Population Pyramids with Global Disease Mortality (opens in a new tab)

   Tharaka Fonseka, Buddhi Wijenayake, Athulya Ratnayake, Inosha Alwis, Supun Manathunga, Roshan Godaliyadda, Samath Dharmarathne, Vijitha Herath, Parakrama Ekanayake, Isuru Pamuditha

   2025

   Journal Demographic Analysis DOI 10.48550/arXiv.2501.11514

8. PoPStat-COVID19: Leveraging Population Pyramids to Quantify Demographic Vulnerability to COVID-19 (opens in a new tab)

   Buddhi Wijenayake, Athulya Ratnayake, Lelumi Edirisinghe, Uditha Wijeratne, Tharaka Fonseka, Roshan Godaliyadda, Samath Dharmaratne, Parakrama Ekanayake, Vijitha Herath, Insoha Alwis, Supun Manathunga

   International Conference on Advances in ICT for Emerging Regions 2025 · 2025

   Conference Accepted Demographic Analysis DOI 10.48550/arXiv.2509.14213

9. Precision Spatio-Temporal Feature Fusion for Robust Remote Sensing Change Detection (opens in a new tab)

   Buddhi Wijenayake, Athulya Ratnayake, Praveen Sumanasekara, Nichula Wasalathilaka, Mathivathanan Piratheepan, Roshan Godaliyadda, Mervyn Ekanayake, Vijitha Herath

   International Conference on Industrial and Information Systems 2025 · 2025

   Conference Accepted Hyperspectral Unmixing DOI 10.48550/arXiv.2507.11523