1 code implementation • 12 Dec 2023 • Pavel Petracek, Kostas Alexis, Martin Saska
The typical point cloud sampling methods used in state estimation for mobile robots preserve a high level of point redundancy.
no code implementations • 11 Sep 2023 • Mihir Kulkarni, Kostas Alexis
This paper contributes a novel learning-based method for aggressive task-driven compression of depth images and their encoding as images tailored to collision prediction for robotic systems.
no code implementations • 29 Dec 2020 • Frank Mascarich, Kostas Alexis
This report accompanies a dataset release on visual and thermal camera data and details a procedure followed to align such multi-modal camera frames in order to provide pixel-level correspondence between the two without using intrinsic or extrinsic calibration information.
1 code implementation • 15 Jun 2020 • Harpreet Singh, Emily M. Hand, Kostas Alexis
The advent of self-driving cars provides an opportunity to apply visual anomaly detection in a more dynamic application yet no dataset exists in this type of environment.
no code implementations • 16 Apr 2019 • Mubariz Zaffar, Ahmad Khaliq, Shoaib Ehsan, Michael Milford, Kostas Alexis, Klaus McDonald-Maier
Visual Place Recognition (VPR) has seen significant advances at the frontiers of matching performance and computational superiority over the past few years.
no code implementations • 5 Mar 2019 • Shehryar Khattak, Christos Papachristos, Kostas Alexis
This paper proposes a method for tight fusion of visual, depth and inertial data in order to extend robotic capabilities for navigation in GPS-denied, poorly illuminated, and texture-less environments.
no code implementations • 5 Mar 2019 • Shehryar Khattak, Christos Papachristos, Kostas Alexis
Visible spectrum cameras are the most commonly used sensors due to their low cost and weight.
no code implementations • 3 Mar 2019 • Shehryar Khattak, Christos Papachristos, Kostas Alexis
This paper proposes an approach for fusing direct radiometric data from a thermal camera with inertial measurements to extend the robotic capabilities of aerial robots for navigation in GPS-denied and visually degraded environments in the conditions of darkness and in the presence of airborne obscurants such as dust, fog and smoke.
no code implementations • 2 Mar 2019 • Shehryar Khattak, Christos Papachristos, Kostas Alexis
For robotic inspection tasks in known environments fiducial markers provide a reliable and low-cost solution for robot localization.
no code implementations • 16 Nov 2018 • Sotirios Diamantas, Kostas Alexis
In this research we present a novel algorithm for background subtraction using a moving camera.