Search Results for author: Mohan Trivedi

Found 19 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

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

Structure Aware and Class Balanced 3D Object Detection on nuScenes Dataset

no code implementations25 May 2022 Sushruth Nagesh, Asfiya Baig, Savitha Srinivasan, Akshay Rangesh, Mohan Trivedi

Point cloud based methods have become increasingly popular for 3-D object detection, owing to their accurate depth information.

3D Object Detection Autonomous Driving +2

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

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

Scene Compliant Trajectory Forecast with Agent-Centric Spatio-Temporal Grids

no code implementations16 Sep 2019 Daniela Ridel, Nachiket Deo, Denis Wolf, Mohan Trivedi

Forecasting long-term human motion is a challenging task due to the non-linearity, multi-modality and inherent uncertainty in future trajectories.

3D BAT: A Semi-Automatic, Web-based 3D Annotation Toolbox for Full-Surround, Multi-Modal Data Streams

2 code implementations1 May 2019 Walter Zimmer, Akshay Rangesh, Mohan Trivedi

In this paper, we focus on obtaining 2D and 3D labels, as well as track IDs for objects on the road with the help of a novel 3D Bounding Box Annotation Toolbox (3D BAT).

Motion Planning motion prediction

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