Search Results for author: Holger Voos

Found 14 papers, 2 papers with code

Learning High-level Semantic-Relational Concepts for SLAM

no code implementations30 Sep 2023 Jose Andres Millan-Romera, Hriday Bavle, Muhammad Shaheer, Martin R. Oswald, Holger Voos, Jose Luis Sanchez-Lopez

Concretely, our previous work, Situational Graphs (S-Graphs+), a pioneer in jointly leveraging semantic relationships in the factor optimization process, relies on semantic entities such as Planes and Rooms, whose relationship is mathematically defined.

Faster Optimization in S-Graphs Exploiting Hierarchy

no code implementations22 Aug 2023 Hriday Bavle, Jose Luis Sanchez-Lopez, Javier Civera, Holger Voos

A global optimization of the compressed graph is performed every time a loop closure is detected.

Adaptive Super-Twisting Controller Design for Accurate Trajectory Tracking Performance of Unmanned Aerial Vehicles

no code implementations21 Mar 2023 D. M. K. K. Venkateswara Rao, Hamed Habibi, Jose Luis Sanchez-Lopez, Prathyush P. Menon, Christopher Edwards, Holger Voos

In this paper, an adaptive super-twisting controller is designed for an agile maneuvering quadrotor unmanned aerial vehicle to achieve accurate trajectory tracking in the presence of external disturbances.

On SORA for High-Risk UAV Operations under New EU Regulations: Perspectives for Automated Approach

no code implementations3 Mar 2023 Hamed Habibi, D. M. K. K. Venkateswara Rao, Jose Luis Sanchez-Lopez, Holger Voos

Accordingly, we propose an alternative workflow, considering the same steps, while addressing the challenges and pitfalls, to shorten the whole process.

UAV Path Planning Employing MPC- Reinforcement Learning Method Considering Collision Avoidance

no code implementations21 Feb 2023 Mahya Ramezani, Hamed Habibi, Jose luis Sanchez Lopez, Holger Voos

In this paper, we tackle the problem of Unmanned Aerial (UA V) path planning in complex and uncertain environments by designing a Model Predictive Control (MPC), based on a Long-Short-Term Memory (LSTM) network integrated into the Deep Deterministic Policy Gradient algorithm.

Collision Avoidance Model Predictive Control +2

S-Graphs+: Real-time Localization and Mapping leveraging Hierarchical Representations

1 code implementation22 Dec 2022 Hriday Bavle, Jose Luis Sanchez-Lopez, Muhammad Shaheer, Javier Civera, Holger Voos

In this paper, we present an evolved version of Situational Graphs, which jointly models in a single optimizable factor graph (1) a pose graph, as a set of robot keyframes comprising associated measurements and robot poses, and (2) a 3D scene graph, as a high-level representation of the environment that encodes its different geometric elements with semantic attributes and the relational information between them.

Advanced Situational Graphs for Robot Navigation in Structured Indoor Environments

no code implementations16 Nov 2022 Hriday Bavle, Jose Luis Sanchez-Lopez, Muhammad Shaheer, Javier Civera, Holger Voos

Mobile robots extract information from its environment to understand their current situation to enable intelligent decision making and autonomous task execution.

Decision Making Robot Navigation

Visual SLAM: What are the Current Trends and What to Expect?

no code implementations19 Oct 2022 Ali Tourani, Hriday Bavle, Jose Luis Sanchez-Lopez, Holger Voos

In this regard, Visual Simultaneous Localization and Mapping (VSLAM) methods refer to the SLAM approaches that employ cameras for pose estimation and map generation.

Pose Estimation Simultaneous Localization and Mapping

RAUM-VO: Rotational Adjusted Unsupervised Monocular Visual Odometry

no code implementations14 Mar 2022 Claudio Cimarelli, Hriday Bavle, Jose Luis Sanchez-Lopez, Holger Voos

To this end, we match 2D keypoints between consecutive frames using pre-trained deep networks, Superpoint and Superglue, while training a network for depth and pose estimation using an unsupervised training protocol.

Monocular Visual Odometry Motion Estimation +2

Situational Graphs for Robot Navigation in Structured Indoor Environments

no code implementations24 Feb 2022 Hriday Bavle, Jose Luis Sanchez-Lopez, Muhammad Shaheer, Javier Civera, Holger Voos

Mobile robots should be aware of their situation, comprising the deep understanding of their surrounding environment along with the estimation of its own state, to successfully make intelligent decisions and execute tasks autonomously in real environments.

Pose Estimation Robot Navigation

From SLAM to Situational Awareness: Challenges and Survey

no code implementations1 Oct 2021 Hriday Bavle, Jose Luis Sanchez-Lopez, Claudio Cimarelli, Ali Tourani, Holger Voos

The capability of a mobile robot to efficiently and safely perform complex missions is limited by its knowledge of the environment, namely the situation.

Decision Making Sensor Fusion +1

Metaheuristics for the Online Printing Shop Scheduling Problem

1 code implementation22 Jun 2020 Willian T. Lunardi, Ernesto G. Birgin, Débora P. Ronconi, Holger Voos

This challenging real scheduling problem, that emerged in the nowadays printing industry, corresponds to a flexible job shop scheduling problem with sequencing flexibility; and it presents several complicating specificities such as resumable operations, periods of unavailability of the machines, sequence-dependent setup times, partial overlapping between operations with precedence constraints, and fixed operations, among others.

Job Shop Scheduling Scheduling

A Real-Time Approach for Chance-Constrained Motion Planning with Dynamic Obstacles

no code implementations22 Jan 2020 Manuel Castillo-Lopez, Philippe Ludivig, Seyed Amin Sajadi-Alamdari, Jose Luis Sanchez-Lopez, Miguel A. Olivares-Mendez, Holger Voos

Uncertain dynamic obstacles, such as pedestrians or vehicles, pose a major challenge for optimal robot navigation with safety guarantees.

Robotics Optimization and Control

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