Personal information

United Kingdom

Activities

Employment (4)

University of Sheffield: Sheffield, Sheffield, GB

2005-06 to present | Lecturer (Electrical and Electronic Engineering)
Employment
Source: Self-asserted source
Charith Abhayaratne

Queen Mary University of London: London, London, GB

2004-02 to 2005-06 | Research Associate (Electronics Engineering)
Employment
Source: Self-asserted source
Charith Abhayaratne

Inria Centre de Recherche Sophia Antipolis Méditerranée: Sophia Antipolis, Provence-Alpes-Côte d'Azu, FR

2003-03 to 2004-01 | ERCIM Postdoctoral fellow (ARIANA)
Employment
Source: Self-asserted source
Charith Abhayaratne

Centrum Wiskunde en Informatica: Amsterdam, Noord-Holland, NL

2002-06 to 2003-02 | ERCIM Postodtoral Fellow (PNA-4)
Employment
Source: Self-asserted source
Charith Abhayaratne

Education and qualifications (2)

University of Bath: Bath, Bath and North East Somer, GB

1998-02 to 2002-06 | PhD (Electronic and Electrical engineering)
Education
Source: Self-asserted source
Charith Abhayaratne

University of Adelaide: Adelaide, SA, AU

1994-02 to 1997-11 | BE (Hons) Electronic and Electrical Engineering (Electronic and Electrical Engineering)
Education
Source: Self-asserted source
Charith Abhayaratne

Funding (4)

Seamless and Adaptive Wireless Access for Efficient Future Networks (SERAN)

Source: Self-asserted source
Charith Abhayaratne via DimensionsWizard

KTP- The University of Sheffield and Cruz IT Limited (Image-based indexing and search tools for image catalogues (IBIS))

2013-10 to 2015-09 | Grant
Innovate UK (Swindon, GB)
GRANT_NUMBER: 508905/ KTP009217
Source: Self-asserted source
Charith Abhayaratne

Hyper Realistic Video Coding

2012-03 to 2016-08 | Award
EPSRC and BBC R&D (Swindon, GB)
GRANT_NUMBER:

11440442

Source: Self-asserted source
Charith Abhayaratne

Persistent And Robust Tracking of Entertainment Content (PARTEC)

2011-06 to 2013-05 | Grant
Innovate UK (Swindon, GB)
GRANT_NUMBER: 100946
Source: Self-asserted source
Charith Abhayaratne

Works (50 of 68)

Items per page:
Page 1 of 2

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

IEEE Access
2023 | Journal article
Contributors: Shuohan Xue; Charith Abhayaratne
Source: check_circle
Crossref

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

ACM Transactions on Multimedia Computing, Communications, and Applications
2023-06-30 | Journal article
Contributors: Basheer Alwaely; Charith Abhayaratne
Source: check_circle
Crossref

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

2023-04-19 | Conference paper
Contributors: Abdulaziz Alrashidi; Peter Cudd; Charith Abhayaratne; Yoshihiko Gotoh
Source: check_circle
Crossref

Making Sense of Neuromorphic Event Data for Human Action Recognition

IEEE Access
2021 | Journal article
Contributors: Salah Al-Obaidi; Hiba Al-Khafaji; Charith Abhayaratne
Source: check_circle
Crossref

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

IEEE Access
2020 | Journal article
Contributors: Basheer Alwaely; Charith Abhayaratne
Source: check_circle
Crossref

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

IEEE Access
2020 | Journal article
Contributors: Salah Al-Obaidi; Hiba Al-Khafaji; Charith Abhayaratne
Source: check_circle
Crossref

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

IEEE Access
2019 | Journal article
Contributors: Basheer Alwaely; Charith Abhayaratne
Source: check_circle
Crossref

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

Journal of Electronic Imaging
2019-07-12 | Journal article
Part of ISSN: 1017-9909
Source: Self-asserted source
Charith Abhayaratne

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

Journal of Microscopy
2016 | Journal article
EID:

2-s2.0-84961768874

Contributors: Angadi, V.C.; Abhayaratne, C.; Walther, T.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Mapping-free high dynamic range image compression

5th IEEE International Conference on Consumer Electronics - Berlin, ICCE-Berlin 2015
2016 | Conference paper
EID:

2-s2.0-84977654993

Contributors: Feng, T.; Pal, S.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Real-time recognition of activity levels for ambient assisted living

5th IEEE International Conference on Consumer Electronics - Berlin, ICCE-Berlin 2015
2016 | Conference paper
EID:

2-s2.0-84977618966

Contributors: Pal, S.; Feng, T.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Visual Attention-Based Image Watermarking

IEEE Access
2016 | Journal article
Contributors: Deepayan Bhowmik; Matthew Oakes; Charith Abhayaratne
Source: check_circle
Crossref

Global motion compensated visual attention-based video watermarking

2016-12-09 | Journal article
Source: Self-asserted source
Charith Abhayaratne

Quality Scalability Aware Watermarking for Visual Content

IEEE Transactions on Image Processing
2016-11 | Journal article
Contributors: Deepayan Bhowmik; Charith Abhayaratne
Source: check_circle
Crossref

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

ACM International Conference Proceeding Series
2015 | Conference paper
EID:

2-s2.0-84958238329

Contributors: Pal, S.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

A new saliency model using intra coded High Efficiency Video Coding (HEVC) frames

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
2014 | Book
EID:

2-s2.0-84893503002

Contributors: Oakes, M.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Colour space transforms for improved video compression

International Conference on Systems, Signals, and Image Processing
2014 | Conference paper
EID:

2-s2.0-84903961261

Contributors: Wang, Y.; Abhayaratne, C.; Weerakkody, R.; Mrak, M.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

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

2014 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2014
2014 | Conference paper
EID:

2-s2.0-84949927622

Contributors: Wang, Y.; Abhayaratne, C.; Weerakkody, R.; Mrak, M.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

On robustness against JPEG2000: A performance evaluation of wavelet-based watermarking techniques

Multimedia Systems
2014 | Journal article
EID:

2-s2.0-84894575152

Contributors: Bhowmik, D.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Running Gaussian reference-based reconstruction for video compressed sensing

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
2014 | Conference paper
EID:

2-s2.0-84905227078

Contributors: Hotrakool, W.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Classification of remotely compressively sensed data

IET Conference Publications
2013 | Conference paper
EID:

2-s2.0-84896885082

Contributors: Alharbiy, A.A.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Fast compressed sensing reconstruction using the least squares and signal correlation

IET Conference Publications
2013 | Conference paper
EID:

2-s2.0-84896882303

Contributors: Hotrakool, W.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Kinect depth stream pre-processing for hand gesture recognition

2013 IEEE International Conference on Image Processing, ICIP 2013 - Proceedings
2013 | Conference paper
EID:

2-s2.0-84897798881

Contributors: Asad, M.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

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

Journal of Real-Time Image Processing
2013 | Journal article
EID:

2-s2.0-84881615580

Contributors: Abhayaratne, C.; Bhowmik, D.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

2D+t wavelet domain video watermarking

Advances in Multimedia
2012 | Journal article
EID:

2-s2.0-84859755512

Contributors: Bhowmik, D.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Distortion constrained robustness scalable watermarking

IET Conference Publications
2012 | Conference paper
EID:

2-s2.0-84865475888

Contributors: Bhowmik, D.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

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

Signal Processing: Image Communication
2012 | Journal article
EID:

2-s2.0-84861099968

Contributors: Majid, M.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Robust watermarking for scalable image coding-based content adaptation

IET Conference Publications
2012 | Conference paper
EID:

2-s2.0-84865518123

Contributors: Bhowmik, D.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Visual saliency estimation for video

International Workshop on Image Analysis for Multimedia Interactive Services
2012 | Conference paper
EID:

2-s2.0-84865147469

Contributors: Oakes, M.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

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

Journal of Electronic Imaging
2011 | Journal article
EID:

2-s2.0-80055045252

Contributors: Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

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

Journal of Ambient Intelligence and Smart Environments
2011 | Journal article
EID:

2-s2.0-79960814907

Contributors: Cardinaux, F.; Bhowmik, D.; Abhayaratne, C.; Hawley, M.S.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Visual attention-based watermarking

Proceedings - IEEE International Symposium on Circuits and Systems
2011 | Conference paper
EID:

2-s2.0-79960854836

Contributors: Oakes, M.; Bhowmik, D.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Robustness analysis of blindwatermarking for quality scalable image compression

European Signal Processing Conference
2010 | Conference paper
EID:

2-s2.0-84863806533

Contributors: Bhowmik, D.; Abhayaratne, C.; Oakes, M.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Scalable multiple description video coding using successive refinement of side quantizers

28th Picture Coding Symposium, PCS 2010
2010 | Conference paper
EID:

2-s2.0-79951807995

Contributors: Majid, M.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

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

28th Picture Coding Symposium, PCS 2010
2010 | Conference paper
EID:

2-s2.0-79951802387

Contributors: Majid, M.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

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

MM and Sec'10 - Proceedings of the 2010 ACM SIGMM Multimedia and Security Workshop
2010 | Conference paper
EID:

2-s2.0-78149271095

Contributors: Bhowmik, D.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

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

Proceedings of SPIE - The International Society for Optical Engineering
2009 | Conference paper
EID:

2-s2.0-62549109099

Contributors: Bhowmik, D.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

A generalised model for distortion performance analysis of wavelet based watermarking

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
2009 | Book
EID:

2-s2.0-78650388583

Contributors: Bhowmik, D.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Distributed multiple description image coding

2009 IEEE International Workshop on Multimedia Signal Processing, MMSP '09
2009 | Conference paper
EID:

2-s2.0-74349111561

Contributors: Majid, M.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Embedding distortion modeling for non-orthonormal wavelet based watermarking schemes

Proceedings of SPIE - The International Society for Optical Engineering
2009 | Conference paper
EID:

2-s2.0-62549108658

Contributors: Bhowmik, D.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Fully scalable multiple description image coding

2009 IEEE International Workshop on Multimedia Signal Processing, MMSP '09
2009 | Conference paper
EID:

2-s2.0-74349090423

Contributors: Majid, M.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Multiple description image coding using several multiple description scalar quantizers

Proceedings of SPIE - The International Society for Optical Engineering
2009 | Conference paper
EID:

2-s2.0-62349102169

Contributors: Majid, M.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Multiple description scalar quantization with successive refinement

European Signal Processing Conference
2009 | Conference paper
EID:

2-s2.0-84863767834

Contributors: Majid, M.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Robust visual content representation using compression modes driven low-level visual descriptors

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
2009 | Book
EID:

2-s2.0-59049090221

Contributors: Abhayaratne, C.; Muzammil, F.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Special issue on scalable coded media beyond compression

Signal Processing: Image Communication
2009 | Journal article
EID:

2-s2.0-67349186948

Contributors: Abhayaratne, C.; Izquierdo, E.; Mrak, M.; Tubaro, S.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

The effect of quality scalable image compression on robust watermarking

DSP 2009: 16th International Conference on Digital Signal Processing, Proceedings
2009 | Conference paper
EID:

2-s2.0-70449572276

Contributors: Bhowmik, D.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

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

IET Conference Publications
2008 | Conference paper
EID:

2-s2.0-67649226392

Contributors: Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Evaluation of watermark robustness to JPEG2000 based content adaptation attacks

IET Conference Publications
2008 | Conference paper
EID:

2-s2.0-67649147808

Contributors: Bhowmik, D.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

A watermark evaluation bench for content adaptation modes

IET Conference Publications
2007 | Conference paper
EID:

2-s2.0-67449098278

Contributors: Bhowmik, D.; Abhayaratne, C.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier

Morphological wavelet domain watermarking

European Signal Processing Conference
2007 | Conference paper
EID:

2-s2.0-84863756939

Contributors: Bhowmik, D.; Abhayaratne, G.C.K.
Source: Self-asserted source
Charith Abhayaratne via Scopus - Elsevier
Items per page:
Page 1 of 2