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Nathan Piasco

9 accepted papers

2025

ViiNeuS: Volumetric Initialization for Implicit Neural Surface Reconstruction of Urban Scenes with Limited Image Overlap

CVPR 2025poster

Neural implicit surface representation methods have recently shown impressive 3D reconstruction results. However, existing solutions struggle to reconstruct driving scenes due to their large size, highly complex nature and limited visual observation overlap.Hence, to achieve accurate reconstructions…

Cited by 0SourcePDFScholar
2024

3DGS-Calib: 3D Gaussian Splatting for Multimodal SpatioTemporal Calibration

IROS 2024poster

Reliable multimodal sensor fusion algorithms require accurate spatiotemporal calibration. Recently, targetless calibration techniques based on implicit neural representations have proven to provide precise and robust results. Nevertheless, such methods are inherently slow to train given the high com…

Cited by 6SourceScholar
2024

SOAC: Spatio-Temporal Overlap-Aware Multi-Sensor Calibration using Neural Radiance Fields

CVPR 2024poster

In rapidly-evolving domains such as autonomous driving the use of multiple sensors with different modalities is crucial to ensure high operational precision and stability. To correctly exploit the provided information by each sensor in a single common frame it is essential for these sensors to be ac…

Cited by 10SourcePDFScholar
2024

SWAG: Splatting in the Wild images with Appearance-conditioned Gaussians

ECCV 2024poster

"Implicit neural representation methods have shown impressive advancements in learning 3D scenes from unstructured in-the-wild photo collections but are still limited by the large computational cost of volumetric rendering. Recently, 3D Gaussian Splatting emerged as a much faster alternative with su…

Cited by 24SourcePDFScholar
2023

CROSSFIRE: Camera Relocalization On Self-Supervised Features from an Implicit Representation

ICCV 2023poster

Beyond novel view synthesis, Neural Radiance Fields are useful for applications that interact with the real world. In this paper, we use them as an implicit map of a given scene and propose a camera relocalization algorithm tailored for this representation. The proposed method enables to compute in…

Cited by 31PDFScholar
2023

MOISST: Multimodal Optimization of Implicit Scene for SpatioTemporal Calibration

IROS 2023poster

With the recent advances in autonomous driving and the decreasing cost of LiDARs, the use of multimodal sensor systems is on the rise. However, in order to make use of the information provided by a variety of complimentary sensors, it is necessary to accurately calibrate them. We take advantage of r…

Cited by 15SourceScholar
2021

LENS: Localization enhanced by NeRF synthesis

CoRL 2021poster

Neural Radiance Fields (NeRF) have recently demonstrated photorealistic results for the task of novel view synthesis. In this paper, we propose to apply novel view synthesis to the robot relocalization problem: we demonstrate improvement of camera pose regression thanks to an additional synthetic da…

Cited by 153SourceScholar
2019

Learning Scene Geometry for Visual Localization in Challenging Conditions

ICRA 2019poster

We propose a new approach for outdoor large scale image based localization that can deal with challenging scenarios like cross-season, cross-weather, day/night and long-term localization. The key component of our method is a new learned global image descriptor, that can effectively benefit from scen…

Cited by 48SourceScholar
2016

Collaborative localization and formation flying using distributed stereo-vision

ICRA 2016

This paper considers collaborative stereo-vision as a mean of localization for a fleet of micro-air vehicles (MAV) equipped with monocular cameras, inertial measurement units and sonar sensors. A sensor fusion scheme using an extended Kalman filter is designed to estimate the positions and orientati

Cited by 40SourceScholar