All Stories

  1. Spatio-temporal graph neural network based child action recognition using data-efficient methods: A systematic analysis

    Article • Computer Vision and Image Understanding, September 2025, Elsevier

    Charith Abhayaratne

  2. An Approximate Computing-Based Spiking Neural Networks Neuron Model and STDP Learning

    Article • IEEE Transactions on Circuits and Systems I Regular Papers, January 2025, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  3. On the Adversarial Robustness of Hand-Crafted Features and Their Role in Defending Adversarial Examples

    Article • IEEE Access, January 2025, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  4. Region-CAM: Towards Accurate Object Regions in Class Activation Maps for Weakly Supervised Learning Tasks

    Article • IEEE Access, January 2025, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  5. Exploration of verbal descriptions and dynamic indoors environments for people with sight loss

    Article • April 2023, ACM (Association for Computing Machinery)

    Charith Abhayaratne

  6. GHOSM: Graph-based Hybrid Outline and Skeleton Modelling for Shape Recognition

    Article • ACM Transactions on Multimedia Computing Communications and Applications, February 2023, ACM (Association for Computing Machinery)

    Basheer Alwaely, Charith Abhayaratne

  7. Region-of-Interest Aware 3D ResNet for Classification of COVID-19 Chest Computerised Tomography Scans

    Article • IEEE Access, January 2023, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  8. Making Sense of Neuromorphic Event Data for Human Action Recognition

    Article • IEEE Access, January 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  9. AGSF: Adaptive Graph Formulation and Hand-Crafted Graph Spectral Features for Shape Representation

    Article • IEEE Access, January 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  10. Modeling Temporal Visual Salience for Human Action Recognition Enabled Visual Anonymity Preservation

    Article • IEEE Access, January 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  11. Embedding Distortion Analysis in Wavelet-domain Watermarking

    Article • ACM Transactions on Multimedia Computing Communications and Applications, November 2019, ACM (Association for Computing Machinery)

    Deepayan Bhowmik, Charith Abhayaratne

  12. Referenced compressed sensing for accurate and fast spatio-temporal signal reconstruction

    Article • Journal of Electronic Imaging, July 2019, SPIE

    Charith Abhayaratne

  13. Graph Spectral Domain Feature Learning With Application to in-Air Hand-Drawn Number and Shape Recognition

    Article • IEEE Access, January 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  14. Global motion compensated visual attention-based video watermarking

    Article • Journal of Electronic Imaging, December 2016, SPIE

    Charith Abhayaratne

  15. Quality Scalability Aware Watermarking for Visual Content

    Article • IEEE Transactions on Image Processing, November 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  16. Automated background subtraction technique for electron energy-loss spectroscopy and application to semiconductor heterostructures

    Article • Journal of Microscopy, March 2016, Wiley

    Charith Abhayaratne

  17. Visual Attention-Based Image Watermarking

    Article • IEEE Access, January 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  18. Video-based activity level recognition for assisted living using motion features

    Article • September 2015, ACM (Association for Computing Machinery)

    Charith Abhayaratne

  19. Mapping-free high dynamic range image compression

    Article • September 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  20. Real-time recognition of activity levels for ambient assisted living

    Article • September 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  21. Multi-scale dithering for contouring artefacts removal in compressed UHD video sequences

    Article • December 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  22. Running Gaussian reference-based reconstruction for video compressed sensing

    Article • May 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  23. A New Saliency Model Using Intra Coded High Efficiency Video Coding (HEVC) Frames

    Article • January 2014, Springer Science + Business Media

    Charith Abhayaratne

  24. On robustness against JPEG2000: a performance evaluation of wavelet-based watermarking techniques

    Article • Multimedia Systems, September 2013, Springer Science + Business Media

    Charith Abhayaratne

  25. Kinect depth stream pre-processing for hand gesture recognition

    Article • September 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  26. Classification of Remotely Compressively Sensed Data

    Article • January 2013, the Institution of Engineering and Technology (the IET)

    Charith Abhayaratne

  27. Fast compressed sensing reconstruction using the least squares and signal correlation

    Article • January 2013, the Institution of Engineering and Technology (the IET)

    Charith Abhayaratne

  28. Redundancy controllable scalable unbalanced multiple description bitstream generation for peer-to-peer video streaming

    Article • Signal Processing Image Communication, May 2012, Elsevier

    Charith Abhayaratne

  29. Visual saliency estimation for video

    Article • May 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  30. 2D+t Wavelet Domain Video Watermarking

    Article • Advances in Multimedia, January 2012, Hindawi Publishing Corporation

    Charith Abhayaratne

  31. Distortion constrained robustness scalable watermarking

    Article • January 2012, the Institution of Engineering and Technology (the IET)

    Charith Abhayaratne

  32. Robust watermarking for scalable image coding-based content adaptation

    Article • January 2012, the Institution of Engineering and Technology (the IET)

    Charith Abhayaratne

  33. Scalable watermark extraction for real-time authentication of JPEG 2000 images

    Article • Journal of Real-Time Image Processing, August 2011, Springer Science + Business Media

    Charith Abhayaratne

  34. Reversible wavelet filter banks with side informationless spatially adaptive low-pass filters

    Article • Journal of Electronic Imaging, July 2011, SPIE

    Charith Abhayaratne

  35. Visual attention-based watermarking

    Article • May 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  36. Video based technology for ambient assisted living: A review of the literature

    Article • Journal of Ambient Intelligence and Smart Environments, January 2011, IOS Press

    Charith Abhayaratne

  37. Scalable multiple description video coding using successive refinement of side quantizers

    Article • December 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  38. Successive refinement of overlapped cell side quantizers for scalable multiple description coding

    Article • December 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  39. Video watermarking using motion compensated 2D+t+2D filtering

    Article • January 2010, ACM (Association for Computing Machinery)

    Charith Abhayaratne

  40. Distributed multiple description image coding

    Article • October 2009, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  41. Fully scalable multiple description image coding

    Article • October 2009, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  42. Special issue on scalable coded media beyond compression

    Article • Signal Processing Image Communication, July 2009, Elsevier

    Charith Abhayaratne

  43. The effect of quality scalable image compression on robust watermarking

    Article • July 2009, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  44. A framework for evaluating wavelet based watermarking for scalable coded digital item adaptation attacks

    Article • February 2009, SPIE

    Charith Abhayaratne

  45. Embedding distortion modeling for non-orthonormal wavelet based watermarking schemes

    Article • February 2009, SPIE

    Charith Abhayaratne

  46. Multiple description image coding using several multiple description scalar quantizers

    Article • January 2009, SPIE

    Charith Abhayaratne

  47. A Generalised Model for Distortion Performance Analysis of Wavelet Based Watermarking

    Article • January 2009, Springer Science + Business Media

    Charith Abhayaratne

  48. Robust Visual Content Representation Using Compression Modes Driven Low-level Visual Descriptors

    Article • January 2009, Springer Science + Business Media

    Charith Abhayaratne

  49. Content adaptation resilient low-level visual features for content based image retrieval

    Article • January 2008, the Institution of Engineering and Technology (the IET)

    Charith Abhayaratne

  50. Evaluation of watermark robustness to JPEG2000 based content adaptation attacks

    Article • January 2008, the Institution of Engineering and Technology (the IET)

    Charith Abhayaratne

  51. Reversible integer-to-integer mapping of -point orthonormal block transforms

    Article • Signal Processing, May 2007, Elsevier

    Charith Abhayaratne

  52. Watermark evaluation bench for content adaptation modes

    Article • January 2007, the Institution of Engineering and Technology (the IET)

    Charith Abhayaratne

  53. Scalable coded domain low-level visual feature extraction

    Article • January 2007, the Institution of Engineering and Technology (the IET)

    Charith Abhayaratne

  54. Scalable near-lossless image coding

    Article • Journal of Electronic Imaging, October 2006, SPIE

    Charith Abhayaratne

  55. Reducing aliasing in wavelets based downsampling for improved resolution scalability

    Article • January 2005, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  56. Texture-adaptive mother wavelet selection for texture analysis

    Article • January 2005, Institute of Electrical & Electronics Engineers (IEEE)

    Charith Abhayaratne

  57. <title>Modifying integer wavelet transforms for scalable near-lossless image coding</title>

    Article • June 2003, SPIE

    Charith Abhayaratne

  58. <title>Orthonormal integer block transforms for lossless coding: design and performance analysis</title>

    Article • June 2003, SPIE

    Charith Abhayaratne

  59. <title>Embedded-to-lossless coding of motion-compensated prediction residuals in lossless video coding</title>

    Article • December 2000, SPIE

    Charith Abhayaratne