Search Results for author: Stewart Worrall

Found 23 papers, 10 papers with code

Label-Efficient 3D Object Detection For Road-Side Units

no code implementations9 Apr 2024 Minh-Quan Dao, Holger Caesar, Julie Stephany Berrio, Mao Shan, Stewart Worrall, Vincent Frémont, Ezio Malis

We address this challenge by devising a label-efficient object detection method for RSU based on unsupervised object discovery.

3D Object Detection Autonomous Driving +3

InverseMatrixVT3D: An Efficient Projection Matrix-Based Approach for 3D Occupancy Prediction

1 code implementation23 Jan 2024 Zhenxing Ming, Julie Stephany Berrio, Mao Shan, Stewart Worrall

Specifically, we achieve this by performing matrix multiplications between multi-view image feature maps and two sparse projection matrices.

3D Semantic Occupancy Prediction Depth Estimation

Knowledge-aware Graph Transformer for Pedestrian Trajectory Prediction

no code implementations10 Jan 2024 Yu Liu, Yuexin Zhang, Kunming Li, Yongliang Qiao, Stewart Worrall, You-Fu Li, He Kong

To overcome this limitation, this paper proposes a graph transformer structure to improve prediction performance, capturing the differences between the various sites and scenarios contained in the datasets.

Autonomous Vehicles Domain Adaptation +2

Classification of Safety Driver Attention During Autonomous Vehicle Operation

no code implementations17 Oct 2023 Santiago Gerling Konrad, Julie Stephany Berrio, Mao Shan, Favio Masson, Stewart Worrall

This paper introduces a dual-source approach integrating data from an infrared camera facing the vehicle operator and vehicle perception systems to produce a metric for driver alertness in order to promote and ensure safe operator behaviour.

Autonomous Vehicles

MS3D++: Ensemble of Experts for Multi-Source Unsupervised Domain Adaption in 3D Object Detection

1 code implementation11 Aug 2023 Darren Tsai, Julie Stephany Berrio, Mao Shan, Eduardo Nebot, Stewart Worrall

MS3D++ provides a straightforward approach to domain adaptation by generating high-quality pseudo-labels, enabling the adaptation of 3D detectors to a diverse range of lidar types, regardless of their density.

3D Object Detection Domain Generalization +3

LightFormer: An End-to-End Model for Intersection Right-of-Way Recognition Using Traffic Light Signals and an Attention Mechanism

1 code implementation14 Jul 2023 Zhenxing Ming, Julie Stephany Berrio, Mao Shan, Eduardo Nebot, Stewart Worrall

For smart vehicles driving through signalised intersections, it is crucial to determine whether the vehicle has right of way given the state of the traffic lights.

Practical Collaborative Perception: A Framework for Asynchronous and Multi-Agent 3D Object Detection

1 code implementation4 Jul 2023 Minh-Quan Dao, Julie Stephany Berrio, Vincent Frémont, Mao Shan, Elwan Héry, Stewart Worrall

In this work, we devise a simple yet effective collaboration method that achieves a better bandwidth-performance tradeoff than prior state-of-the-art methods while minimizing changes made to the single-vehicle detection models and relaxing unrealistic assumptions on inter-agent synchronization.

3D Object Detection object-detection

MS3D: Leveraging Multiple Detectors for Unsupervised Domain Adaptation in 3D Object Detection

1 code implementation5 Apr 2023 Darren Tsai, Julie Stephany Berrio, Mao Shan, Eduardo Nebot, Stewart Worrall

Our proposed Kernel-Density Estimation (KDE) Box Fusion method fuses box proposals from multiple domains to obtain pseudo-labels that surpass the performance of the best source domain detectors.

3D Object Detection Density Estimation +2

Viewer-Centred Surface Completion for Unsupervised Domain Adaptation in 3D Object Detection

1 code implementation14 Sep 2022 Darren Tsai, Julie Stephany Berrio, Mao Shan, Eduardo Nebot, Stewart Worrall

With SEE-VCN, we obtain a unified representation of objects across datasets, allowing the network to focus on learning geometry, rather than overfitting on scan patterns.

3D Object Detection Autonomous Driving +3

Optimising the selection of samples for robust lidar camera calibration

1 code implementation23 Mar 2021 Darren Tsai, Stewart Worrall, Mao Shan, Anton Lohr, Eduardo Nebot

We propose a robust calibration pipeline that optimises the selection of calibration samples for the estimation of calibration parameters that fit the entire scene.

Camera Calibration

Socially Aware Crowd Navigation with Multimodal Pedestrian Trajectory Prediction for Autonomous Vehicles

no code implementations23 Nov 2020 Kunming Li, Mao Shan, Karan Narula, Stewart Worrall, Eduardo Nebot

Seamlessly operating an autonomous vehicle in a crowded pedestrian environment is a very challenging task.

Robotics

Camera-Lidar Integration: Probabilistic sensor fusion for semantic mapping

no code implementations9 Jul 2020 Julie Stephany Berrio, Mao Shan, Stewart Worrall, Eduardo Nebot

Our approach is capable of using a multi-sensor platform to build a three-dimensional semantic voxelized map that considers the uncertainty of all of the processes involved.

Sensor Fusion

Efficient statistical validation with edge cases to evaluate Highly Automated Vehicles

no code implementations4 Mar 2020 Dhanoop Karunakaran, Stewart Worrall, Eduardo Nebot

The widescale deployment of Autonomous Vehicles (AV) seems to be imminent despite many safety challenges that are yet to be resolved.

Autonomous Vehicles Reinforcement Learning (RL)

Semantic sensor fusion: from camera to sparse lidar information

no code implementations4 Mar 2020 Julie Stephany Berrio, Mao Shan, Stewart Worrall, James Ward, Eduardo Nebot

This paper presents an approach to fuse different sensory information, Light Detection and Ranging (lidar) scans and camera images.

Navigate Sensor Fusion

Automatic extrinsic calibration between a camera and a 3D Lidar using 3D point and plane correspondences

2 code implementations29 Apr 2019 Surabhi Verma, Julie Stephany Berrio, Stewart Worrall, Eduardo Nebot

This paper proposes an automated method to obtain the extrinsic calibration parameters between a camera and a 3D lidar with as low as 16 beams.

Automated Evaluation of Semantic Segmentation Robustness for Autonomous Driving

no code implementations24 Oct 2018 Wei Zhou, Julie Stephany Berrio, Stewart Worrall, Eduardo Nebot

This paper presents a novel method for analysing the robustness of semantic segmentation models and provides a number of metrics to evaluate the classification performance over a variety of environmental conditions.

Autonomous Driving General Classification +2

Adapting Semantic Segmentation Models for Changes in Illumination and Camera Perspective

no code implementations13 Sep 2018 Wei Zhou, Alex Zyner, Stewart Worrall, Eduardo Nebot

Semantic segmentation using deep neural networks has been widely explored to generate high-level contextual information for autonomous vehicles.

Autonomous Vehicles Data Augmentation +2

Naturalistic Driver Intention and Path Prediction using Recurrent Neural Networks

1 code implementation26 Jul 2018 Alex Zyner, Stewart Worrall, Eduardo Nebot

Understanding the intentions of drivers at intersections is a critical component for autonomous vehicles.

Autonomous Vehicles Clustering +1

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