Research Team Website: Sigmedia.tv

Selected Publications

  1. Vibhoothi Vibhoothi, "Automated Video Encoder Parameterisation from Streaming to Cinema," 2025. [Link]
  2. Julien Zouein and Vibhoothi Vibhoothi and Anil Kokaram, "AV1 Motion Vector Fidelity and Application for Efficient Optical Flow," 2025. [Link] [arXiv]
  3. Vibhoothi Vibhoothi and Julien Zouein and Shanker Shreejith and Jean-Baptiste Kempf and Anil Kokaram, "An Empirical Study of Reducing AV1 Decoder Complexity and Energy Consumption via Encoder Parameter Tuning," 2025. [Link] [arXiv]
  4. Vibhoothi Vibhoothi and François Pitié and Anil Kokaram, "LiteVPNet: A Lightweight Network for Video Encoding Control in Quality-Critical Applications," 2025. [Link] [arXiv]
  5. Xin Shu and Vibhoothi Vibhoothi and Anil Kokaram, "Predicting total time to compress a video corpus using online inference systems," 2024. [Link] [arXiv]
  6. Anil Kokaram and Vibhoothi Vibhoothi and Julien Zouein and François Pitié and Christopher Nash and James Bentley and Philip Coulam-Jones, "Demystifying the use of Compression in Virtual Production," 2024. [Link] [arXiv]
  7. Darren Ramsook and Anil Kokaram and Angeliki Katsenou and David Bull, "Comparative Analysis of Subjective Evaluations for Traditional and Neural-Based Video Enhancement Techniques," 2024. [Link]
  8. Vibhoothi Vibhoothi, Julien Zouein, François Pitié, Anil Kokaram, "Using Single-Pass Look-Ahead in Modern Codecs for Optimized Transcoding Deployment," 2024. [Link]
  9. Daniel Joseph Ringis and Vibhoothi Vibhoothi and François Pitié and Anil Kokaram, "The disparity between optimal and practical Lagrangian multiplier estimation in video encoders," 2023. [Link]
  10. Vibhoothi Vibhoothi and Angeliki Katsenou and François Pitié and Katarina Domijan and Anil Kokaram, "Subjective assessment of the impact of a content adaptive optimiser for compressing 4K HDR content with AV1," 2023. [Link] [arXiv]
  11. Vibhoothi Vibhoothi and Angeliki Katsenou and John Squires and Francois Pitie and Anil Kokaram, "Recommendations for verifying hdr subjective testing workflows," 2023. [Link] [arXiv]
  12. Vibhoothi Vibhoothi and François Pitié and Angeliki Katsenou and Yeping Su and Balu Adsumilli and Anil Kokaram, "Comparison of HDR quality metrics in Per-Clip Lagrangian multiplier optimisation with AV1," 2023. [Link] [arXiv]
  13. Vibhoothi Vibhoothi and Daniel Joseph Ringis and Xin Shu and François Pitié and Zsolt Lorincz and Philippe Brodeur and Anil Kokaram, "Filling the gaps in video transcoder deployment in the cloud," 2023. [Link] [arXiv]
  14. Michael O’Byrne and Mark Sugrue and Vibhoothi Vibhoothi and Anil Kokaram, "Impact of Video Compression on the Performance of Object Detection Systems for Surveillance Applications," 2022. [Link]
  15. Vibhoothi Vibhoothi and François Pitié and Anil Kokaram, "Frame-Type Sensitive RDO Control for Content-Adaptive Encoding," 2022. [Link] [arXiv]
  16. Vibhoothi and François Pitié and Angeliki Katsenou and Daniel Joseph Ringis and Yeping Su and Neil Birkbeck and Jessie Lin and Balu Adsumilli and Anil Kokaram, "Direct optimisation of λ for HDR content adaptive transcoding in AV1," 2022. [Link] [arXiv]

Open-Source Projects