1 code implementation • 19 Dec 2023 • Andreas Papachristodoulou, Christos Kyrkou, Stelios Timotheou, Theocharis Theocharides
The Forward-Forward (FF) Algorithm has been recently proposed to alleviate the issues of backpropagation (BP) commonly used to train deep neural networks.
no code implementations • 13 Jul 2023 • Savvas Papaioannou, Christos Laoudias, Panayiotis Kolios, Theocharis Theocharides, Christos G. Panayiotou
This work considers the problem of passively monitoring multiple moving targets with a single unmanned aerial vehicle (UAV) agent equipped with a direction-finding radar.
no code implementations • 22 May 2023 • Savvas Papaioannou, Panayiotis Kolios, Theocharis Theocharides, Christos G. Panayiotou, Marios M. Polycarpou
This work proposes an integrated guidance and gimbal control coverage path planning (CPP) approach, in which the mobility and gimbal inputs of an autonomous UAV agent are jointly controlled and optimized to achieve full coverage of a given object of interest, according to a specified set of optimality criteria.
no code implementations • 18 Apr 2023 • Savvas Papaioannou, Panayiotis Kolios, Theocharis Theocharides, Christos G. Panayiotou, Marios M. Polycarpou
In this work, a novel distributed search-planning framework is proposed, where a dynamically varying team of autonomous agents cooperate in order to search multiple objects of interest in three-dimension (3-D).
no code implementations • 21 Feb 2023 • Savvas Papaioannou, Panayiotis Kolios, Theocharis Theocharides, Christos G. Panayiotou, Marios M. Polycarpou
In this work a robust and scalable cooperative multi-agent searching and tracking framework is proposed.
no code implementations • 1 Feb 2023 • Savvas Papaioannou, Panayiotis Kolios, Theocharis Theocharides, Christos G. Panayiotou, Marios M. Polycarpou
In this paper, we investigate the problem of joint searching and tracking of multiple mobile targets by a group of mobile agents.
no code implementations • 1 Feb 2023 • Savvas Papaioannou, Panayiotis Kolios, Theocharis Theocharides, Christos G. Panayiotou, Marios M. Polycarpou
In this paper we are interested in the task of searching and tracking multiple moving targets in a bounded surveillance area with a group of autonomous mobile agents.
no code implementations • 1 Feb 2023 • Savvas Papaioannou, Panayiotis Kolios, Theocharis Theocharides, Christos G. Panayiotou, Marios M. Polycarpou
Based on this, we develop decentralized cooperative look-ahead strategies for efficient searching and tracking of an unknown number of targets inside a bounded surveillance area.
no code implementations • 30 Sep 2022 • Dimitris Papatheodoulou, Pavlos Pavlou, Stelios G. Vrachimis, Kleanthis Malialis, Demetrios G. Eliades, Theocharis Theocharides
Numerous real-world problems from a diverse set of application areas exist that exhibit temporal dependencies.
no code implementations • 30 Sep 2022 • Michalis Piponidis, Panayiotis Aristodemou, Theocharis Theocharides
While Unmanned Aerial Vehicles (UAVs) are increasingly deployed in several missions, their inability of reliable and consistent autonomous landing poses a major setback for deploying such systems truly autonomously.
no code implementations • 5 Nov 2021 • Andreas Papachristodoulou, Christos Kyrkou, Theocharis Theocharides
We explore the space of different autoencoder architectures and evaluate them on a diverse dataset created with real and synthetic images demonstrating that by exploiting spatio-temporal information combined with multi-component loss we significantly increase robustness against adverse image effects reaching within 5-6% of that of the original model on clean images.
1 code implementation • 28 Apr 2021 • Christos Kyrkou, Theocharis Theocharides
Deep learning-based algorithms can provide state-of-the-art accuracy for remote sensing technologies such as unmanned aerial vehicles (UAVs)/drones, potentially enhancing their remote sensing capabilities for many emergency response and disaster management applications.
no code implementations • 4 Jan 2021 • Muhammad Shafique, Mahum Naseer, Theocharis Theocharides, Christos Kyrkou, Onur Mutlu, Lois Orosa, Jungwook Choi
Machine Learning (ML) techniques have been rapidly adopted by smart Cyber-Physical Systems (CPS) and Internet-of-Things (IoT) due to their powerful decision-making capabilities.
1 code implementation • 7 Jul 2020 • Rafael Makrigiorgis, Panayiotis Kolios, Stelios Timotheou, Theocharis Theocharides, Christos G. Panayiotou
At large, this system behavior is characterized through the fundamental diagram of a road segment, a region or the network.
1 code implementation • 14 Nov 2019 • George Plastiras, Christos Kyrkou, Theocharis Theocharides
Many applications utilizing Unmanned Aerial Vehicles (UAVs) require the use of computer vision algorithms to analyze the information captured from their on-board camera.
no code implementations • 14 Nov 2019 • George Plastiras, Christos Kyrkou, Theocharis Theocharides
Moreover, a use-case for pedestrian detection from Unmanned-Areal-Vehicle (UAV) is presented showing the impact that the proposed approach has on sensitivity, average processing time and power consumption when is implemented on different platforms.
1 code implementation • 20 Jun 2019 • Christos Kyrkou, Theocharis Theocharides
Unmanned Aerial Vehicles (UAVs), equipped with camera sensors can facilitate enhanced situational awareness for many emergency response and disaster management applications since they are capable of operating in remote and difficult to access areas.
2 code implementations • 18 Jul 2018 • Christos Kyrkou, George Plastiras, Stylianos Venieris, Theocharis Theocharides, Christos-Savvas Bouganis
Through the analysis we propose a CNN architecture that is capable of detecting vehicles from aerial UAV images and can operate between 5-18 frames-per-second for a variety of platforms with an overall accuracy of ~95%.
Object Detection In Aerial Images One-Shot Object Detection +1