1 code implementation • ICML 2020 • Jiri Fajtl, Vasileios Argyriou, Dorothy Monekosso, Paolo Remagnino
In this work, we pose a question whether it is possible to design and train an autoencoder model in an end-to-end fashion to learn latent representations in multivariate Bernoulli space, and achieve performance comparable with the current state-of-the-art variational methods.
2 code implementations • 7 Apr 2024 • Demetris Lappas, Vasileios Argyriou, Dimitrios Makris
We introduce Dynamic Distinction Learning (DDL) for Video Anomaly Detection, a novel video anomaly detection methodology that combines pseudo-anomalies, dynamic anomaly weighting, and a distinction loss function to improve detection accuracy.
no code implementations • 25 Mar 2024 • Stella Bounareli, Christos Tzelepis, Vasileios Argyriou, Ioannis Patras, Georgios Tzimiropoulos
To this end, in this paper we present DiffusionAct, a novel method that leverages the photo-realistic image generation of diffusion models to perform neural face reenactment.
no code implementations • 20 Mar 2024 • Gowravi Malalur Rajegowda, Yannis Spyridis, Barbara Villarini, Vasileios Argyriou
This data is then used to train the CNN model, which recognises the skin type and existing issues and allows the recommendation engine to suggest personalised skin care products.
no code implementations • 11 Mar 2024 • Georgios Tsoumplekas, Vladislav Li, Ilias Siniosoglou, Vasileios Argyriou, Sotirios K. Goudos, Ioannis D. Moscholios, Panagiotis Radoglou-Grammatikis, Panagiotis Sarigiannidis
In the ever-evolving era of Artificial Intelligence (AI), model performance has constituted a key metric driving innovation, leading to an exponential growth in model size and complexity.
no code implementations • 5 Feb 2024 • Georgios Tsoumplekas, Vladislav Li, Vasileios Argyriou, Anastasios Lytos, Eleftherios Fountoukidis, Sotirios K. Goudos, Ioannis D. Moscholios, Panagiotis Sarigiannidis
Despite deep learning's widespread success, its data-hungry and computationally expensive nature makes it impractical for many data-constrained real-world applications.
no code implementations • 5 Feb 2024 • Stella Bounareli, Christos Tzelepis, Vasileios Argyriou, Ioannis Patras, Georgios Tzimiropoulos
Moreover, we show that by embedding real images in the GAN latent space, our method can be successfully used for the reenactment of real-world faces.
1 code implementation • ICCV 2023 • Stella Bounareli, Christos Tzelepis, Vasileios Argyriou, Ioannis Patras, Georgios Tzimiropoulos
In this paper, we present our method for neural face reenactment, called HyperReenact, that aims to generate realistic talking head images of a source identity, driven by a target facial pose.
no code implementations • 29 Jun 2023 • Vladislav Li, Barbara Villarini, Jean-Christophe Nebel, Thomas Lagkas, Panagiotis Sarigiannidis, Vasileios Argyriou
The objective of augmented reality (AR) is to add digital content to natural images and videos to create an interactive experience between the user and the environment.
1 code implementation • 27 Sep 2022 • Stella Bounareli, Christos Tzelepis, Vasileios Argyriou, Ioannis Patras, Georgios Tzimiropoulos
In this paper we address the problem of neural face reenactment, where, given a pair of a source and a target facial image, we need to transfer the target's pose (defined as the head pose and its facial expressions) to the source image, by preserving at the same time the source's identity characteristics (e. g., facial shape, hair style, etc), even in the challenging case where the source and the target faces belong to different identities.
1 code implementation • 31 Jan 2022 • Stella Bounareli, Vasileios Argyriou, Georgios Tzimiropoulos
Moreover, we show that by embedding real images in the GAN latent space, our method can be successfully used for the reenactment of real-world faces.
no code implementations • 17 Jun 2019 • Mahdi Maktabdar Oghaz, Anish R. Khadka, Vasileios Argyriou, Paolo Remagnino
Precise knowledge about the size of a crowd, its density and flow can provide valuable information for safety and security applications, event planning, architectural design and to analyze consumer behavior.
no code implementations • 6 Jun 2019 • Mahdi Maktabdar Oghaz, Manzoor Razaak, Hamideh Kerdegari, Vasileios Argyriou, Paolo Remagnino
In this paper, a review of studies applying deep learning on UAV imagery for smart farming is presented.
no code implementations • 6 Jun 2019 • Robert Dupre, Jiri Fajtl, Vasileios Argyriou, Paolo Remagnin
A novel semi-supervised learning technique is introduced based on a simple iterative learning cycle together with learned thresholding techniques and an ensemble decision support system.
no code implementations • 6 Jun 2019 • Antoine Rimboux, Rob Dupre, Thomas Lagkas, Panagiotis Sarigiannidis, Paolo Remagnino, Vasileios Argyriou
In order to provide related behavioural models, simulation and tracking approaches have been considered in the literature.
no code implementations • 24 May 2019 • Hamideh Kerdegari, Manzoor Razaak, Vasileios Argyriou, Paolo Remagnino
The results by the proposed semi-supervised GAN achieves high classification accuracy and demonstrates the potential of GAN-based methods for the challenging task of multispectral image classification.
no code implementations • 12 Dec 2018 • Juan Manuel Fernandez Montenegro, Mahdi Maktab Dar Oghaz, Athanasios Gkelias, Georgios Tzimiropoulos, Vasileios Argyriou
The performance evaluation demonstrates an improvement on facial emotion classification (accuracy and F1 score) that indicates the superiority of the proposed methodology.
no code implementations • 9 Dec 2018 • Chloe Eunhyang Kim, Mahdi Maktab Dar Oghaz, Jiri Fajtl, Vasileios Argyriou, Paolo Remagnino
Recent advancements in parallel computing, GPU technology and deep learning provide a new platform for complex image processing tasks such as person detection to flourish.
4 code implementations • 5 Dec 2018 • Jiri Fajtl, Hajar Sadeghi Sokeh, Vasileios Argyriou, Dorothy Monekosso, Paolo Remagnino
In this work we propose a novel method for supervised, keyshots based video summarization by applying a conceptually simple and computationally efficient soft, self-attention mechanism.
Ranked #3 on Video Summarization on TvSum (using extra training data)
no code implementations • 6 Nov 2018 • Anish R. Khadka, Paolo Remagnino, Vasileios Argyriou
Our suggested approach is to recover scene properties in the presence of indirect illumination.
no code implementations • 2 Nov 2018 • Stefan Hell, Vasileios Argyriou
An application that lets users create rollercoasters directly in VR, share them with other users and ride and rate them is used to gather real-time data related to the in-game behaviour of the player, the track itself and users' ratings based on a Simulator Sickness Questionnaire (SSQ) integrated into the application.
no code implementations • 1 Nov 2018 • Vasileios Argyriou
We address the problem of motion estimation in images operating in the frequency domain.
no code implementations • 18 Apr 2018 • Hajar Sadeghi Sokeh, Vasileios Argyriou, Dorothy Monekosso, Paolo Remagnino
The goal of video segmentation is to turn video data into a set of concrete motion clusters that can be easily interpreted as building blocks of the video.
1 code implementation • CVPR 2018 • Jiri Fajtl, Vasileios Argyriou, Dorothy Monekosso, Paolo Remagnino
Further on we study the impact of the attention mechanism on the memorability estimation and evaluate our network on the SUN Memorability and the LaMem datasets.
no code implementations • 9 Jul 2017 • Rob Dupre, Vasileios Argyriou
In this work we present the modular Crowd Simulation Evaluation through Composition framework (CSEC) which provides a quantitative comparison between different pedestrian and crowd simulation approaches.
1 code implementation • ICCV 2017 • Aaron S. Jackson, Adrian Bulat, Vasileios Argyriou, Georgios Tzimiropoulos
Our CNN works with just a single 2D facial image, does not require accurate alignment nor establishes dense correspondence between images, works for arbitrary facial poses and expressions, and can be used to reconstruct the whole 3D facial geometry (including the non-visible parts of the face) bypassing the construction (during training) and fitting (during testing) of a 3D Morphable Model.
Ranked #2 on 3D Face Reconstruction on Florence