Search Results for author: Ross Greer

Found 22 papers, 3 papers with code

Driver Activity Classification Using Generalizable Representations from Vision-Language Models

no code implementations23 Apr 2024 Ross Greer, Mathias Viborg Andersen, Andreas Møgelmose, Mohan Trivedi

In this paper, we present a novel approach leveraging generalizable representations from vision-language models for driver activity classification.

Action Recognition

Language-Driven Active Learning for Diverse Open-Set 3D Object Detection

no code implementations19 Apr 2024 Ross Greer, Bjørk Antoniussen, Andreas Møgelmose, Mohan Trivedi

In this paper, we propose VisLED, a language-driven active learning framework for diverse open-set 3D Object Detection.

3D Object Detection Active Learning +3

Multi-Frame, Lightweight & Efficient Vision-Language Models for Question Answering in Autonomous Driving

1 code implementation28 Mar 2024 Akshay Gopalkrishnan, Ross Greer, Mohan Trivedi

Vision-Language Models (VLMs) and Multi-Modal Language models (MMLMs) have become prominent in autonomous driving research, as these models can provide interpretable textual reasoning and responses for end-to-end autonomous driving safety tasks using traffic scene images and other data modalities.

Autonomous Driving Language Modelling +3

Learning to Find Missing Video Frames with Synthetic Data Augmentation: A General Framework and Application in Generating Thermal Images Using RGB Cameras

no code implementations29 Feb 2024 Mathias Viborg Andersen, Ross Greer, Andreas Møgelmose, Mohan Trivedi

The findings suggest the potential of generative models in addressing missing frames, advancing driver state monitoring for intelligent vehicles, and underscoring the need for continued research in model generalization and customization.

Data Augmentation Image Generation

Towards Explainable, Safe Autonomous Driving with Language Embeddings for Novelty Identification and Active Learning: Framework and Experimental Analysis with Real-World Data Sets

no code implementations11 Feb 2024 Ross Greer, Mohan Trivedi

From the generated clusters, we further present methods for generating textual explanations of elements which differentiate scenes classified as novel from other scenes in the data pool, presenting qualitative examples from the clustered results.

Active Learning Autonomous Driving +2

Vision-based Analysis of Driver Activity and Driving Performance Under the Influence of Alcohol

no code implementations14 Sep 2023 Ross Greer, Akshay Gopalkrishnan, Sumega Mandadi, Pujitha Gunaratne, Mohan M. Trivedi, Thomas D. Marcotte

About 30% of all traffic crash fatalities in the United States involve drunk drivers, making the prevention of drunk driving paramount to vehicle safety in the US and other locations which have a high prevalence of driving while under the influence of alcohol.

Robust Detection, Association, and Localization of Vehicle Lights: A Context-Based Cascaded CNN Approach and Evaluations

no code implementations27 Jul 2023 Akshay Gopalkrishnan, Ross Greer, Maitrayee Keskar, Mohan Trivedi

Vehicle light detection, association, and localization are required for important downstream safe autonomous driving tasks, such as predicting a vehicle's light state to determine if the vehicle is making a lane change or turning.

Autonomous Driving Data Augmentation

Patterns of Vehicle Lights: Addressing Complexities in Curation and Annotation of Camera-Based Vehicle Light Datasets and Metrics

no code implementations26 Jul 2023 Ross Greer, Akshay Gopalkrishnan, Maitrayee Keskar, Mohan Trivedi

Overall, this paper provides insights into the representation of vehicle lights and the importance of accurate annotations for training effective detection models in autonomous driving applications.

Autonomous Driving Trajectory Prediction

Robust Traffic Light Detection Using Salience-Sensitive Loss: Computational Framework and Evaluations

no code implementations8 May 2023 Ross Greer, Akshay Gopalkrishnan, Jacob Landgren, Lulua Rakla, Anish Gopalan, Mohan Trivedi

One of the most important tasks for ensuring safe autonomous driving systems is accurately detecting road traffic lights and accurately determining how they impact the driver's actions.

Autonomous Driving object-detection +1

Ensemble Learning for Fusion of Multiview Vision with Occlusion and Missing Information: Framework and Evaluations with Real-World Data and Applications in Driver Hand Activity Recognition

no code implementations30 Jan 2023 Ross Greer, Mohan Trivedi

Multi-sensor frameworks provide opportunities for ensemble learning and sensor fusion to make use of redundancy and supplemental information, helpful in real-world safety applications such as continuous driver state monitoring which necessitate predictions even in cases where information may be intermittently missing.

Activity Recognition Autonomous Driving +3

Safe Control Transitions: Machine Vision Based Observable Readiness Index and Data-Driven Takeover Time Prediction

no code implementations14 Jan 2023 Ross Greer, Nachiket Deo, Akshay Rangesh, Pujitha Gunaratne, Mohan Trivedi

To make safe transitions from autonomous to manual control, a vehicle must have a representation of the awareness of driver state; two metrics which quantify this state are the Observable Readiness Index and Takeover Time.

Salient Sign Detection In Safe Autonomous Driving: AI Which Reasons Over Full Visual Context

no code implementations14 Jan 2023 Ross Greer, Akshay Gopalkrishnan, Nachiket Deo, Akshay Rangesh, Mohan Trivedi

Next, we use a custom salience loss function, Salience-Sensitive Focal Loss, to train a Deformable DETR object detection model in order to emphasize stronger performance on salient signs.

Autonomous Driving object-detection +2

CHAMP: Crowdsourced, History-Based Advisory of Mapped Pedestrians for Safer Driver Assistance Systems

no code implementations14 Jan 2023 Ross Greer, Lulua Rakla, Samveed Desai, Afnan Alofi, Akshay Gopalkrishnan, Mohan Trivedi

Moreover, we use the number of correct advisories, false advisories, and missed advisories to define precision and recall performance metrics to evaluate CHAMP.

Pedestrian Detection

From Pedestrian Detection to Crosswalk Estimation: An EM Algorithm and Analysis on Diverse Datasets

no code implementations25 May 2022 Ross Greer, Mohan Trivedi

We demonstrate the algorithmic performance by analyzing three real-world datasets containing multiple periods of data collection for four-corner and two-corner intersections with marked and unmarked crosswalks.

Pedestrian Detection

On Salience-Sensitive Sign Classification in Autonomous Vehicle Path Planning: Experimental Explorations with a Novel Dataset

no code implementations2 Dec 2021 Ross Greer, Jason Isa, Nachiket Deo, Akshay Rangesh, Mohan M. Trivedi

Safe path planning in autonomous driving is a complex task due to the interplay of static scene elements and uncertain surrounding agents.

Autonomous Driving

Predicting Take-over Time for Autonomous Driving with Real-World Data: Robust Data Augmentation, Models, and Evaluation

no code implementations27 Jul 2021 Akshay Rangesh, Nachiket Deo, Ross Greer, Pujitha Gunaratne, Mohan M. Trivedi

Using the augmented dataset, we develop and train take-over time (TOT) models that operate sequentially on mid and high-level features produced by computer vision algorithms operating on different driver-facing camera views, showing models trained on the augmented dataset to outperform the initial dataset.

Autonomous Driving Data Augmentation

Autonomous Vehicles that Alert Humans to Take-Over Controls: Modeling with Real-World Data

no code implementations23 Apr 2021 Akshay Rangesh, Nachiket Deo, Ross Greer, Pujitha Gunaratne, Mohan M. Trivedi

With increasing automation in passenger vehicles, the study of safe and smooth occupant-vehicle interaction and control transitions is key.

Autonomous Vehicles

Trajectory Prediction in Autonomous Driving with a Lane Heading Auxiliary Loss

no code implementations12 Nov 2020 Ross Greer, Nachiket Deo, Mohan Trivedi

Predicting a vehicle's trajectory is an essential ability for autonomous vehicles navigating through complex urban traffic scenes.

Autonomous Driving Trajectory Prediction

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