no code implementations • 12 Jul 2023 • Issa Khalifeh, Luka Murn, Marta Mrak, Ebroul Izquierdo
This network reduces the memory burden by close to 50% and runs up to four times faster during inference time compared to existing transformer-based interpolation methods.
no code implementations • 4 Jul 2023 • Jia-Hong Huang, Luka Murn, Marta Mrak, Marcel Worring
Existing datasets for manually labelled query-based video summarization are costly and thus small, limiting the performance of supervised deep video summarization models.
1 code implementation • 16 Jun 2022 • Saiping Zhang, Luis Herranz, Marta Mrak, Marc Gorriz Blanch, Shuai Wan, Fuzheng Yang
In this paper we propose a generative adversarial network (GAN) framework to enhance the perceptual quality of compressed videos.
no code implementations • 13 May 2022 • Zhaocheng Liu, Luis Herranz, Fei Yang, Saiping Zhang, Shuai Wan, Marta Mrak, Marc Górriz Blanch
Neural video compression has emerged as a novel paradigm combining trainable multilayer neural networks and machine learning, achieving competitive rate-distortion (RD) performances, but still remaining impractical due to heavy neural architectures, with large memory and computational demands.
no code implementations • 13 May 2022 • Issa Khalifeh, Marc Gorriz Blanch, Ebroul Izquierdo, Marta Mrak
Despite all the benefits interpolation methods offer, many of these networks require a lot of parameters, with more parameters meaning a heavier computational burden.
no code implementations • 16 Mar 2022 • Woody Bayliss, Luka Murn, Ebroul Izquierdo, Qianni Zhang, Marta Mrak
In video coding, in-loop filters are applied on reconstructed video frames to enhance their perceptual quality, before storing the frames for output.
no code implementations • 22 Jan 2022 • Saiping Zhang, Luis Herranz, Marta Mrak, Marc Gorriz Blanch, Shuai Wan, Fuzheng Yang
Deformable convolutions can operate on multiple frames, thus leveraging more temporal information, which is beneficial for enhancing the perceptual quality of compressed videos.
1 code implementation • 22 Sep 2021 • Saiping Zhang, Marta Mrak, Luis Herranz, Marc Górriz, Shuai Wan, Fuzheng Yang
In this paper, we introduce deep video compression with perceptual optimizations (DVC-P), which aims at increasing perceptual quality of decoded videos.
1 code implementation • 16 Jun 2021 • Luka Murn, Saverio Blasi, Alan F. Smeaton, Marta Mrak
The approach requires a single neural network to be trained from which a full quarter-pixel interpolation filter set is derived, as the network is easily interpretable due to its linear structure.
no code implementations • 26 May 2021 • Luka Murn, Marc Gorriz Blanch, Maria Santamaria, Fiona Rivera, Marta Mrak
Machine learning techniques for more efficient video compression and video enhancement have been developed thanks to breakthroughs in deep learning.
1 code implementation • 4 May 2021 • Marc Gorriz Blanch, Issa Khalifeh, Alan Smeaton, Noel O'Connor, Marta Mrak
Stylised outputs are then obtained by computing similarities between both feature representations in order to transfer the style of the reference to the content of the target input.
2 code implementations • 26 Apr 2021 • Jia-Hong Huang, Luka Murn, Marta Mrak, Marcel Worring
Traditional video summarization methods generate fixed video representations regardless of user interest.
no code implementations • 19 Apr 2021 • Sudeep Katakol, Luis Herranz, Fei Yang, Marta Mrak
Neural image compression (NIC) is a new coding paradigm where coding capabilities are captured by deep models learned from data.
no code implementations • 9 Feb 2021 • Marc Górriz, Saverio Blasi, Alan F. Smeaton, Noel E. O'Connor, Marta Mrak
Simplifications include a framework for reducing the overhead of the convolutional operations, a simplified cross-component processing model integrated into the original architecture, and a methodology to perform integer-precision approximations with the aim to obtain fast and hardware-aware implementations.
no code implementations • 27 Jun 2020 • Marc Górriz, Saverio Blasi, Alan F. Smeaton, Noel E. O'Connor, Marta Mrak
Neural networks can be used in video coding to improve chroma intra-prediction.
1 code implementation • 11 Jun 2020 • Luka Murn, Saverio Blasi, Alan F. Smeaton, Noel E. O'Connor, Marta Mrak
Deep learning has shown great potential in image and video compression tasks.
no code implementations • 23 Apr 2020 • Maria Santamaria, Saverio Blasi, Ebroul Izquierdo, Marta Mrak
With the increasing demand for video content at higher resolutions, it is evermore critical to find ways to limit the complexity of video encoding tasks in order to reduce costs, power consumption and environmental impact of video services.
1 code implementation • 13 Mar 2020 • Maria Santamaria, Ebroul Izquierdo, Saverio Blasi, Marta Mrak
As reference frames are essential for exploiting temporal redundancies, intra frames are usually assigned a larger portion of the available bits.
1 code implementation • 26 Aug 2019 • Marc Górriz, Marta Mrak, Alan F. Smeaton, Noel E. O'Connor
In this work recent advances in conditional adversarial networks are investigated to develop an end-to-end architecture based on Convolutional Neural Networks (CNNs) to directly map realistic colours to an input greyscale image.
no code implementations • 12 Aug 2019 • Natasha Westland, André Seixas Dias, Marta Mrak
This paper proposes a method for complexity reduction in practical video encoders using multiple decision tree classifiers.
no code implementations • 26 Sep 2018 • Michalis Giannopoulos, Grigorios Tsagkatakis, Saverio Blasi, Farzad Toutounchi, Athanasios Mouchtaris, Panagiotis Tsakalides, Marta Mrak, Ebroul Izquierdo
Moreover, transmission also introduces delays and other distortion types which affect the perceived quality.