Search Results for author: Marta Mrak

Found 21 papers, 8 papers with code

Efficient Convolution and Transformer-Based Network for Video Frame Interpolation

no code implementations12 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.

Video Frame Interpolation

Query-based Video Summarization with Pseudo Label Supervision

no code implementations4 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.

Pseudo Label Video Summarization

Slimmable Video Codec

no code implementations13 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.

Video Compression

Multi-encoder Network for Parameter Reduction of a Kernel-based Interpolation Architecture

no code implementations13 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.

Video Frame Interpolation

Complexity Reduction of Learned In-Loop Filtering in Video Coding

no code implementations16 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.

DCNGAN: A Deformable Convolutional-Based GAN with QP Adaptation for Perceptual Quality Enhancement of Compressed Video

no code implementations22 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.

Generative Adversarial Network Quantization

DVC-P: Deep Video Compression with Perceptual Optimizations

1 code implementation22 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.

Video Compression

Improved CNN-based Learning of Interpolation Filters for Low-Complexity Inter Prediction in Video Coding

1 code implementation16 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.

Explainable Models Motion Compensation +1

Towards Transparent Application of Machine Learning in Video Processing

no code implementations26 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.

BIG-bench Machine Learning Video Compression +1

Attention-based Stylisation for Exemplar Image Colourisation

1 code implementation4 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.

Style Transfer

GPT2MVS: Generative Pre-trained Transformer-2 for Multi-modal Video Summarization

2 code implementations26 Apr 2021 Jia-Hong Huang, Luka Murn, Marta Mrak, Marcel Worring

Traditional video summarization methods generate fixed video representations regardless of user interest.

Video Summarization

DANICE: Domain adaptation without forgetting in neural image compression

no code implementations19 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.

Domain Adaptation Image Compression

Attention-Based Neural Networks for Chroma Intra Prediction in Video Coding

no code implementations9 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.

Analytic Simplification of Neural Network based Intra-Prediction Modes for Video Compression

no code implementations23 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.

Video Compression

Estimation of Rate Control Parameters for Video Coding Using CNN

1 code implementation13 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.

End-to-End Conditional GAN-based Architectures for Image Colourisation

1 code implementation26 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.

Decision Trees for Complexity Reduction in Video Compression

no code implementations12 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.

Video Compression

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