Dr. Subhadeep Koley (শুভদীপ)

I have completed my Doctor of Philosophy (PhD) focusing on Computer Vision and Deep Learning, from SketchX Lab of Centre for Vision, Speech and Signal Processing (CVSSP) , University of Surrey , England, United Kingdom. My supervisors were Prof. Yi-Zhe Song and Prof. Tao (Tony) Xiang .

Currently, I am working as a Senior AI Scientist at Medtronic PLC., London .

Prior to this, I worked as a Computer Vision Engineer at The MathWorks , specializing in Digital Image Processing, Pattern Recognition, Multi & Hyperspectral imaging, Deep Learning, and Medical Image Analysis.

Prior to that, I worked as a Graduate Engineer at Johnson Controls .

Top-venue Conference publications (Feb 2025): 16 x CVPR, 2 x ICCV, 2 x ECCV.

Email  /  LinkedIn  /  Twitter  /  GitHub  /  Google Scholar  /  ORCiD  /  DBLP

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Recent Updates

  • New! [Oct 2026:] Awarded the 2026 BMVA Sullivan Prize for best computer vision PhD thesis in the UK.
  • [Jan 2026:] Defended my PhD Thesis before Prof. Ioannis Patras and Prof. Gustavo Carneiro — with No corrections!
  • [Jul 2025:] One papers in ICCV 2025.
  • [Feb 2025:] Two papers in CVPR 2025.
  • [Jul 2024:] Two papers in ECCV 2024.
  • [Feb 2024:] Six papers in CVPR 2024.
  • [Jul 2023:] One paper in ICCV 2023.
  • [Mar 2023:] Our paper "What Can Human Sketches Do for Object Detection?" is selected among top-12 award candidates in CVPR 2023.
  • [Feb 2023:] Six papers in CVPR 2023.
  • [Jan 2023:] One paper in Pattern Analysis and Applications (IF - 3.9), Springer.
  • [Feb 2022:] Two papers in CVPR 2022.

    • Selected Publications

    2025

    Doodle Your Keypoints: Sketch-Based Few-Shot Keypoint Detection
    S.Maity, AK. Bhunia, S. Koley, PN. Chowdhury, A. Sain, Y-Z. Song
    In Proc. IEEE International Conference on Computer Vision ( ICCV ), 2025
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video] / [Code]

    Training-free temporal object tracking in surgical videos
    S. Koley, A. Kadkhodamohammadi, S. Barbarisi, D. Stoyanov, I. Luengo
    In Proc. International Conference on Information Processing in Computer-Assisted Interventions ( IPCAI ), 2025
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video] / [Code]

    SketchFusion: Learning Universal Sketch Features through Fusing Foundation Models
    S. Koley, TK. Dutta, A. Sain, PN. Chowdhury, AK. Bhunia, Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2025
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video] / [Code]

    Sketch Down the FLOPs: Towards Efficient Networks for Human Sketch
    A. Sain, S. Maity, PN. Chowdhury, S. Koley, AK. Bhunia, Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2025
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]

    2024

    Freeview Sketching: View-Aware Fine-Grained Sketch-Based Image Retrieval
    A. Sain, PN. Chowdhury, S. Koley, AK. Bhunia, Y-Z. Song
    In Proc. European Conference on Computer Vision ( ECCV ), 2024
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]
    Do Generalised Classifiers really work on Human Drawn Sketches?
    H. Bandopadhyay, PN. Chowdhury, A. Sain, S. Koley, T. Xiang, AK. Bhunia, Y-Z. Song
    In Proc. European Conference on Computer Vision ( ECCV ), 2024
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]
    It's All About Your Sketch: Democratising Sketch Control in Diffusion Models
    S. Koley, AK. Bhunia, D. Sekhri, A. Sain, PN. Chowdhury, T. Xiang , Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2024
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]
    You'll Never Walk Alone: A Sketch and Text Duet for Fine-Grained Image Retrieval
    S. Koley, AK. Bhunia, A. Sain, PN. Chowdhury, T. Xiang , Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2024
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]
    Text-to-Image Diffusion Models are Great Sketch-Photo Matchmakers
    S. Koley, AK. Bhunia, A. Sain, PN. Chowdhury, T. Xiang , Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2024
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]
    How to Handle Sketch-Abstraction in Sketch-Based Image Retrieval?
    S. Koley, AK. Bhunia, A. Sain, PN. Chowdhury, T. Xiang , Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2024
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]
    In the Media - [Linnk.ai]

    DemoCaricature: Democratising Caricature Generation with a Rough Sketch
    D-Y. Chen, AK. Bhunia, S. Koley, A. Sain, PN. Chowdhury, Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2024
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]

    Doodle Your 3D: From Abstract Freehand Sketches to Precise 3D Shapes
    H. Bandyopadhyay, S. Koley, A. Das, AK. Bhunia, A. Sain, PN. Chowdhury, T. Xiang , Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2024
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]
    In the Media - [NoFilmSchool]

    2023

    Democratising 2D Sketch to 3D Shape Retrieval Through Pivoting
    PN. Chowdhury, AK. Bhunia, A. Sain, S. Koley, T. Xiang , Y-Z. Song
    In Proc. IEEE International Conference on Computer Vision ( ICCV ), 2023
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]

    Picture that Sketch: Photorealistic Image Generation from Abstract Sketches
    S. Koley, AK. Bhunia, A. Sain, PN. Chowdhury, T. Xiang , Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2023
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]
    In the Media - [Market Tech Post]

    Sketch2Saliency: Learning to Detect Salient Objects from Human Drawings
    AK. Bhunia, S. Koley, A Kumar, A. Sain, PN. Chowdhury, T. Xiang , Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2023
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]

    Exploiting Unlabelled Photos for Stronger Fine-Grained SBIR
    A. Sain, AK. Bhunia, , S. Koley, PN. Chowdhury, T. Xiang , Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2023
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]

    What Can Human Sketches Do for Object Detection?
    PN. Chowdhury, AK. Bhunia, A. Sain, S. Koley, T. Xiang , Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2023
    [Nominated as a paper award candidate!]
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]
    In the Media - [India Gov AI] / [Tech Xplore] / [Science Daily] / [Mirage News] / [Market Tech Post] / [HospiMedica]

    CLIP for All Things Zero-Shot Sketch-Based Image Retrieval, Fine-Grained or Not
    A. Sain, AK. Bhunia, PN. Chowdhury, S. Koley, T. Xiang , Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2023
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]

    SceneTrilogy: On Human Scene-Sketch and its Complementarity with Photo and Text
    PN. Chowdhury, AK. Bhunia, A. Sain, S. Koley, T. Xiang , Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2023
    [PDF] / [BibTeX] / [arXiv] / [Project Page] / [Video]

    Cross-Modal Face Recognition with Illumination-Invariant Local Discrete Cosine Transform Binary Pattern (LDCTBP)
    S. Koley, H. Roy, S.Dhar, D. Bhattacharjee
    Pattern Analysis and Applications, Springer
    [PDF] / [BibTeX]

    2022

    Doodle It Yourself: Class Incremental Learning by Drawing a Few Sketches
    AK. Bhunia , VR. Gajjala, S. Koley, R. Kundu, A. Sain, T. Xiang , Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2022
    [PDF] / [BibTeX] / [Video] / [Code]
    In the Media - [Market Tech Post]

    Sketching without Worrying: Noise-Tolerant Sketch-Based Image Retrieval
    AK. Bhunia , S. Koley, AFUR. Khilji , A. Sain, PN. Chowdhury, T. Xiang, Y-Z. Song
    In Proc. IEEE Conference on Computer Vision and Pattern Recognition ( CVPR ), 2022
    [PDF] / [BibTeX] / [Video] / [Code]

    Bat optimized 3D anaglyph image watermarking based on maximum noise fraction in the digital Shearlet domain
    S. Koley
    Multimedia Tools and Applications, vol. 81, pp. 19491–19523, Springer
    [PDF] / [BibTeX]

    2021

    Illumination invariant face recognition using Fused Cross Lattice Pattern of Phase Congruency (FCLPPC)
    S. Koley, H. Roy, S.Dhar, D. Bhattacharjee
    Information Sciences, vol. 584, pp. 633 - 648, Elsevier
    [PDF] / [BibTeX]

    Gammadion Binary Pattern of Shearlet Coefficients (GBPSC): An illumination-invariant heterogeneous face descriptor
    S. Koley, H. Roy, D. Bhattacharjee
    Pattern Recognition Letters, vol. 145, pp. 30 - 36, Elsevier
    [PDF] / [Code] / [BibTeX]

    Local–Friis–Radiation–Pattern (LFRP) for Face Recognition
    H. Roy, S. Koley
    Sensing and Imaging, vol. 22, no. 1, pp. 1 - 35, Springer
    [PDF] / [Code] / [BibTeX]

    A wavelet based low frequency prior for single image dehazing
    S. Koley, H. Roy, S. Dhar
    Recent Trends in Computational Intelligence Enabled Research, 1st Edn., pp. 245 - 261, Elsevier
    [PDF] / [BibTeX]

    On Mitigation of False Positive Problem in Singular Value Decomposition based Digital Image Watermarking
    S. Koley
    Lecture Notes on Data Engineering and Communications Technologies, pp. 299 - 312, Springer
    [PDF] / [BibTeX]

    2020

    Edge Detection based on Local–Friis–Radiation–Magnitude–Ratio (LFRMR)
    S. Koley, H. Roy, S. Dhar, D. Bhattacharjee
    In Proc. 5th ICRCICN 2020, Banglore, India, pp. 99 - 104, IEEE
    [PDF] / [BibTeX]

    Visual attention model based dual watermarking for simultaneous image copyright protection and authentication
    S. Koley
    Multimedia Tools and Applications, vol. 80, pp. 6755 - 6783, Springer
    [PDF] / [BibTeX]

    Hardware Implementation of a Fast 3D Anaglyph Image Watermarking Framework for Integration in Consumer Electronics Devices
    S. Koley
    In Proc. 5th ZINC 2020, Novi Sad, Serbia, pp. 40 - 45, IEEE
    [PDF] / [BibTeX]

    2019

    A Wavelet-Based Blind Digital Image Watermarking using Dynamic LSB Replacement (DLSBR) and Symmetric Key Cryptography
    A. Ghosh, S. Koley, S. Bhattacharya
    Advances in Intelligent Systems and Computing, vol. 922, pp. 103 - 111, Springer
    [PDF] / [BibTeX]

    A feature adaptive image watermarking framework based on Phase Congruency and Symmetric Key Cryptography
    S. Koley
    Journal of King Saud University Computer and Information Sciences, vol. 34, no. 3, pp. 636 - 645, Elsevier
    [PDF] / [BibTeX]

    Implementation of a Feature Adaptive Colour Image Copyright Protection Scheme
    S. Koley, M. R. Nayak, S. N. Bal, S. K. Sarkar
    Lecture Notes In Electrical Engineering, vol. 537, pp. 201 - 211, Springer
    [PDF] / [BibTeX]

    2018

    Single Image Visibility Restoration using Dark Channel Prior and Fuzzy Logic
    S. Koley, A. Sadhu, H. Roy, S. Dhar
    In Proc. 2nd IEMENTech 2018, Kolkata, India, pp. 1 - 7, IEEE
    [PDF] / [Code] / [BibTeX]



    Professional & Voluntary work

  • Serving as a reviewer for:
  • Serving as a reviewer for CVPR, ICCV, ECCV, BMVC since 2022.

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    Chekout my reading list (non-academic) at GoodReads

    Copyright: CC BY-NC-SA 4.0 © Subhadeep Koley | Last updated: 23 Oct 2026 | Good artists copy, great artists steal.