Search Results for author: Angeliki Katsenou

Found 10 papers, 2 papers with code

Rate-Quality or Energy-Quality Pareto Fronts for Adaptive Video Streaming?

no code implementations10 Feb 2024 Angeliki Katsenou, Xinyi Wang, Daniel Schien, David Bull

Adaptive video streaming is a key enabler for optimising the delivery of offline encoded video content.

Comparative Study of Hardware and Software Power Measurements in Video Compression

no code implementations19 Dec 2023 Angeliki Katsenou, Xinyi Wang, Daniel Schien, David Bull

The environmental impact of video streaming services has been discussed as part of the strategies towards sustainable information and communication technologies.

Video Compression

UGC Quality Assessment: Exploring the Impact of Saliency in Deep Feature-Based Quality Assessment

no code implementations13 Aug 2023 Xinyi Wang, Angeliki Katsenou, David Bull

Preliminary results indicate that high correlations are achieved by using only deep features while adding saliency is not always boosting the performance.

Subjective assessment of the impact of a content adaptive optimiser for compressing 4K HDR content with AV1

1 code implementation26 Jun 2023 Vibhoothi, Angeliki Katsenou, François Pitié, Katarina Domijan, Anil Kokaram

Since 2015 video dimensionality has expanded to higher spatial and temporal resolutions and a wider colour gamut.

4k

Comparison of HDR quality metrics in Per-Clip Lagrangian multiplier optimisation with AV1

1 code implementation28 Mar 2023 Vibhoothi, François Pitié, Angeliki Katsenou, Yeping Su, Balu Adsumilli, Anil Kokaram

The complexity of modern codecs along with the increased need of delivering high-quality videos at low bitrates has reinforced the idea of a per-clip tailoring of parameters for optimised rate-distortion performance.

Energy-Rate-Quality Tradeoffs of State-of-the-Art Video Codecs

no code implementations2 Oct 2022 Angeliki Katsenou, Jongwewi Mao, Ioannis Mavromatis

The adoption of video conferencing and video communication services, accelerated by COVID-19, has driven a rapid increase in video data traffic.

Direct Optimisation of $\boldsymbolλ$ for HDR Content Adaptive Transcoding in AV1

no code implementations23 Aug 2022 Vibhoothi, François Pitié, Angeliki Katsenou, Daniel Joseph Ringis, Yeping Su, Neil Birkbeck, Jessie Lin, Balu Adsumilli, Anil Kokaram

Since the adoption of VP9 by Netflix in 2016, royalty-free coding standards continued to gain prominence through the activities of the AOMedia consortium.

A CNN-based Post-Processor for Perceptually-Optimized Immersive Media Compression

no code implementations25 Feb 2022 Angeliki Katsenou, Fan Zhang, David Bull

In recent years, resolution adaptation based on deep neural networks has enabled significant performance gains for conventional (2D) video codecs.

Enhancing VMAF through New Feature Integration and Model Combination

no code implementations10 Mar 2021 Fan Zhang, Angeliki Katsenou, Christos Bampis, Lukas Krasula, Zhi Li, David Bull

VMAF is a machine learning based video quality assessment method, originally designed for streaming applications, which combines multiple quality metrics and video features through SVM regression.

regression Video Quality Assessment

Encoding in the Dark Grand Challenge: An Overview

no code implementations7 May 2020 Nantheera Anantrasirichai, Fan Zhang, Alexandra Malyugina, Paul Hill, Angeliki Katsenou

In this paper, we present an overview of the proposed challenge, and test state-of-the-art methods that will be part of the benchmark methods at the stage of the participants' deliverable assessment.

Denoising Image Enhancement

Cannot find the paper you are looking for? You can Submit a new open access paper.