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Sarvapali D. Ramchurn

9 accepted papers

2026

Through the Lens of Doubt: Robust and Efficient Uncertainty Estimation for Visual Place Recognition

RA-L 2026

Visual Place Recognition (VPR) enables robots and autonomous vehicles to identify previously visited locations by matching current observations against a database of known places. However, VPR systems face significant challenges when deployed across varying visual environments, lighting conditions,

Cited by 0SourceScholar
2025

On Motion Blur and Deblurring in Visual Place Recognition

RA-L 2025

Visual Place Recognition (VPR) in mobile robotics enables robots to localize themselves by recognizing previously visited locations using visual data. While the reliability of VPR methods has been extensively studied under conditions such as changes in illumination, season, weather and viewpoint, th

Cited by 8SourceScholar
2025

Optimising Spatial Teamwork Under Uncertainty

AAAI 2025technical

We introduce a novel method for assessing agent teamwork based on their spatial coordination. Our approach models the influence of spatial proximity on team formation and sustained spatial dominance over adversaries using a Multi-agent Markov Decision Process. We develop an algorithm to derive effic…

Cited by 0SourcePDFScholar
2025

Structured Pruning for Efficient Visual Place Recognition

RA-L 2025

Visual Place Recognition (VPR) is fundamental for the global re-localization of robots and devices, enabling them to recognize previously visited locations based on visual inputs. This capability is crucial for maintaining accurate mapping and localization over large areas. Given that VPR methods ne

Cited by 1SourceScholar
2025

TeTRA-VPR: A Ternary Transformer Approach for Compact Visual Place Recognition

RA-L 2025

Visual Place Recognition (VPR) localizes a query image by matching it against a database of geo-tagged reference images, making it essential for navigation and mapping in robotics. Although Vision Transformer (ViT) solutions deliver high accuracy, their large models often exceed the memory and compu

Cited by 2SourceScholar
2024

Design Space Exploration of Low-Bit Quantized Neural Networks for Visual Place Recognition

RA-L 2024

Visual Place Recognition (VPR) is a critical task for performing global re-localization in visual perception systems, requiring the ability to recognize a previously visited location under variations such as illumination, occlusion, appearance and viewpoint. In the case of robotics, the target devic

Cited by 9SourceScholar
2024

Learning to Imitate Spatial Organization in Multi-robot Systems

IROS 2024poster

Understanding collective behavior and how it evolves is important to ensure that robot swarms can be trusted in a shared environment. One way to understand the behavior of the swarm is through collective behavior reconstruction using prior demonstrations. Existing approaches often require access to…

Cited by 0SourceScholar
2022

Collective Decision Making in Communication-Constrained Environments

IROS 2022poster

One of the main tasks for autonomous robot swarms is to collectively decide on the best available option. Achieving that requires a high quality communication between the agents that may not always be available in a real world environment. In this paper we introduce the communication-constrained col…

Cited by 2SourceScholar