no code implementations • 2 Jan 2024 • Dimitrios Kollias, Viktoriia Sharmanska, Stefanos Zafeiriou
Multi-Task Learning (MTL) is a framework, where multiple related tasks are learned jointly and benefit from a shared representation space, or parameter transfer.
Ranked #1 on Facial Expression Recognition (FER) on AffectNet (Accuracy (7 emotion) metric, using extra training data)
1 code implementation • 7 Nov 2022 • Myles Bartlett, Sara Romiti, Viktoriia Sharmanska, Novi Quadrianto
In order to perform the online matching in a runtime- and memory-efficient way, we draw upon the self-supervised literature and combine a memory bank with a slow-moving momentum encoder.
no code implementations • 3 Aug 2022 • Michail Christos Doukas, Evangelos Ververas, Viktoriia Sharmanska, Stefanos Zafeiriou
We present Free-HeadGAN, a person-generic neural talking head synthesis system.
1 code implementation • 3 Aug 2022 • Sara Romiti, Christopher Inskip, Viktoriia Sharmanska, Novi Quadrianto
We demonstrate the effectiveness of RealPatch on three benchmark datasets, CelebA, Waterbirds and a subset of iWildCam, showing improvements in worst-case subgroup performance and in subgroup performance gap in binary classification.
1 code implementation • CVPR 2022 • Tetiana Martyniuk, Orest Kupyn, Yana Kurlyak, Igor Krashenyi, Jiři Matas, Viktoriia Sharmanska
Experimentally, DAD-3DNet outperforms or is comparable to the state-of-the-art models in (i) 3D Head Pose Estimation on AFLW2000-3D and BIWI, (ii) 3D Face Shape Reconstruction on NoW and Feng, and (iii) 3D Dense Head Alignment and 3D Landmarks Estimation on DAD-3DHeads dataset.
Ranked #6 on Head Pose Estimation on AFLW2000
1 code implementation • 24 Mar 2022 • Thomas Kehrenberg, Myles Bartlett, Viktoriia Sharmanska, Novi Quadrianto
We investigate a scenario in which the absence of certain data is linked to the second level of a two-level hierarchy in the data.
no code implementations • 8 May 2021 • Dimitrios Kollias, Viktoriia Sharmanska, Stefanos Zafeiriou
Based on this approach, we build FaceBehaviorNet, the first framework for large-scale face analysis, by jointly learning all facial behavior tasks.
Ranked #5 on Facial Expression Recognition (FER) on RAF-DB (Avg. Accuracy metric, using extra training data)
no code implementations • 30 Mar 2021 • Michail Christos Doukas, Mohammad Rami Koujan, Viktoriia Sharmanska, Stefanos Zafeiriou
Head reenactment is an even more challenging task, which aims at transferring not only the facial expression, but also the entire head pose from a source person to a target.
no code implementations • 1 Jan 2021 • Thomas Kehrenberg, Viktoriia Sharmanska, Myles Scott Bartlett, Novi Quadrianto
In a statistical notion of algorithmic fairness, we partition individuals into groups based on some key demographic factors such as race and gender, and require that some statistics of a classifier be approximately equalized across those groups.
no code implementations • ICCV 2021 • Michail Christos Doukas, Stefanos Zafeiriou, Viktoriia Sharmanska
Recent attempts to solve the problem of head reenactment using a single reference image have shown promising results.
1 code implementation • 17 Jun 2020 • Michail Christos Doukas, Mohammad Rami Koujan, Viktoriia Sharmanska, Anastasios Roussos
Facial video re-targeting is a challenging problem aiming to modify the facial attributes of a target subject in a seamless manner by a driving monocular sequence.
no code implementations • 14 Apr 2020 • Viktoriia Sharmanska, Lisa Anne Hendricks, Trevor Darrell, Novi Quadrianto
Computer vision algorithms, e. g. for face recognition, favour groups of individuals that are better represented in the training data.
no code implementations • 15 Oct 2019 • Dimitrios Kollias, Viktoriia Sharmanska, Stefanos Zafeiriou
We present the first and the largest study of all facial behaviour tasks learned jointly in a single multi-task, multi-domain and multi-label network, which we call FaceBehaviorNet.
no code implementations • 28 May 2019 • Michail C. Doukas, Viktoriia Sharmanska, Stefanos Zafeiriou
Despite remarkable success in image-to-image translation that celebrates the advancements of generative adversarial networks (GANs), very limited attempts are known for video domain translation.
1 code implementation • CVPR 2019 • Novi Quadrianto, Viktoriia Sharmanska, Oliver Thomas
On face images of the recent DiF dataset, with the same gender attribute, our method adjusts nose regions.
no code implementations • NeurIPS 2017 • Novi Quadrianto, Viktoriia Sharmanska
We set an overarching goal to develop a unified machine learning framework that is able to handle any definitions of fairness, their combinations, and also new definitions that might be stipulated in the future.
no code implementations • CVPR 2016 • Viktoriia Sharmanska, Novi Quadrianto
Can we learn about object classes in images by looking at a collection of relevant 3D models?
no code implementations • CVPR 2016 • Viktoriia Sharmanska, Daniel Hernandez-Lobato, Jose Miguel Hernandez-Lobato, Novi Quadrianto
On the technical side, we propose a framework to incorporate annotation disagreements into the classifiers.
no code implementations • CVPR 2015 • Anastasia Pentina, Viktoriia Sharmanska, Christoph H. Lampert
Sharing information between multiple tasks enables algorithms to achieve good generalization performance even from small amounts of training data.
no code implementations • 1 Oct 2014 • Viktoriia Sharmanska, Novi Quadrianto, Christoph H. Lampert
We interpret these methods as learning easiness and hardness of the objects in the privileged space and then transferring this knowledge to train a better classifier in the original space.
no code implementations • NeurIPS 2014 • Daniel Hernández-Lobato, Viktoriia Sharmanska, Kristian Kersting, Christoph H. Lampert, Novi Quadrianto
That is, in contrast to the standard GPC setting, the latent function is not just a nuisance but a feature: it becomes a natural measure of confidence about the training data by modulating the slope of the GPC sigmoid likelihood function.
no code implementations • 26 Sep 2013 • Novi Quadrianto, Viktoriia Sharmanska, David A. Knowles, Zoubin Ghahramani
We propose a probabilistic model to infer supervised latent variables in the Hamming space from observed data.