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Supervised 3D Object Detection models have been displaying increasingly better performance in single-domain cases where the training data comes from the same environment and sensor as the testing data. However, in real-world scenarios data…

Computer Vision and Pattern Recognition · Computer Science 2023-08-03 Louis Soum-Fontez , Jean-Emmanuel Deschaud , François Goulette

The task of detecting anomalous data patterns is as important in practical applications as challenging. In the context of spatial data, recognition of unexpected trajectories brings additional difficulties, such as high dimensionality and…

Given trajectory data, a domain-specific study area, and a user-defined threshold, we aim to find anomalous trajectories indicative of possible GPS spoofing (e.g., fake trajectory). The problem is societally important to curb illegal…

Machine Learning · Computer Science 2025-06-17 Arun Sharma , Mingzhou Yang , Majid Farhadloo , Subhankar Ghosh , Bharat Jayaprakash , Shashi Shekhar

Trajectory prediction is a safety-critical tool for autonomous vehicles to plan and execute actions. Our work addresses two key challenges in trajectory prediction, learning multimodal outputs, and better predictions by imposing constraints…

Computer Vision and Pattern Recognition · Computer Science 2021-04-19 Sriram Narayanan , Ramin Moslemi , Francesco Pittaluga , Buyu Liu , Manmohan Chandraker

Trajectory anomaly detection is crucial for effective decision-making in urban and human mobility management. Existing methods of trajectory anomaly detection generally focus on training a trajectory generative model and evaluating the…

Machine Learning · Computer Science 2024-10-28 Haoji Hu , Jina Kim , Jinwei Zhou , Sofia Kirsanova , JangHyeon Lee , Yao-Yi Chiang

Detecting road obstacles is essential for autonomous vehicles to navigate dynamic and complex traffic environments safely. Current road obstacle detection methods typically assign a score to each pixel and apply a threshold to generate…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Youssef Shoeb , Nazir Nayal , Azarm Nowzad , Fatma Güney , Hanno Gottschalk

In this paper, we present a compressed data structure for moving object trajectories in a road network, which are represented as sequences of road edges. Unlike existing compression methods for trajectories in a network, our method supports…

Data Structures and Algorithms · Computer Science 2017-10-02 Satoshi Koide , Yukihiro Tadokoro , Chuan Xiao , Yoshiharu Ishikawa

Several algorithms have been proposed for discovering patterns from trajectories of moving objects, but only a few have concentrated on outlier detection. Existing approaches, in general, discover spatial outliers, and do not provide any…

Artificial Intelligence · Computer Science 2013-03-22 Vitor Cunha Fontes , Vania Bogorny

Pothole detection is one of the most important tasks for road maintenance. Computer vision approaches are generally based on either 2D road image analysis or 3D road surface modeling. However, these two categories are always used…

Computer Vision and Pattern Recognition · Computer Science 2022-05-24 Rui Fan , Umar Ozgunalp , Brett Hosking , Ming Liu , Ioannis Pitas

High-quality datasets are essential for training robust perception systems in autonomous driving. However, real-world data collection is often biased toward common scenes and objects, leaving novel cases underrepresented. This imbalance…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Philipp Reis , Joshua Ransiek , David Petri , Jacob Langner , Eric Sax

Test sets are an integral part of evaluating models and gauging progress in object recognition, and more broadly in computer vision and AI. Existing test sets for object recognition, however, suffer from shortcomings such as bias towards…

Computer Vision and Pattern Recognition · Computer Science 2023-01-31 Ali Borji

The study of complex many-body systems via analysis of the trajectories of the units that dynamically move and interact within them is a non-trivial task. The workflow for extracting meaningful information from the raw trajectory data is…

Materials Science · Physics 2025-10-31 Simone Martino , Matteo Becchi , Andrew Tarzia , Daniele Rapetti , Giovanni M. Pavan

Intelligent machines require basic information such as moving-object detection from videos in order to deduce higher-level semantic information. In this paper, we propose a methodology that uses a texture measure to detect moving objects in…

Computer Vision and Pattern Recognition · Computer Science 2014-02-04 Pranam Janney , Glenn Geers

Advances in perception for self-driving cars have accelerated in recent years due to the availability of large-scale datasets, typically collected at specific locations and under nice weather conditions. Yet, to achieve the high safety…

Detecting anomalous trajectories has become an important task in many location-based applications. While many approaches have been proposed for this task, they suffer from various issues including (1) incapability of detecting anomalous…

Databases · Computer Science 2022-11-16 Qianru Zhang , Zheng Wang , Cheng Long , Chao Huang , Siu-Ming Yiu , Yiding Liu , Gao Cong , Jieming Shi

We introduce a novel approach to dynamic obstacle avoidance based on Deep Reinforcement Learning by defining a traffic type independent environment with variable complexity. Filling a gap in the current literature, we thoroughly investigate…

Machine Learning · Computer Science 2021-12-30 Fabian Hart , Martin Waltz , Ostap Okhrin

The ability to anticipate pedestrian motion changes is a critical capability for autonomous vehicles. In urban environments, pedestrians may enter the road area and create a high risk for driving, and it is important to identify these…

Computer Vision and Pattern Recognition · Computer Science 2023-05-26 Anthony Knittel , Morris Antonello , John Redford , Subramanian Ramamoorthy

Distance-based reward mechanisms in deep reinforcement learning (DRL) navigation systems suffer from critical safety limitations in dynamic environments, frequently resulting in collisions when visibility is restricted. We propose DRL-NSUO,…

Robotics · Computer Science 2025-03-04 Mingao Tan , Shanze Wang , Biao Huang , Zhibo Yang , Rongfei Chen , Xiaoyu Shen , Wei Zhang

In an autonomous driving system, it is essential to recognize vehicles, pedestrians and cyclists from images. Besides the high accuracy of the prediction, the requirement of real-time running brings new challenges for convolutional network…

Computer Vision and Pattern Recognition · Computer Science 2021-06-17 Yueming Zhang , Xiaolin Song , Bing Bai , Tengfei Xing , Chao Liu , Xin Gao , Zhihui Wang , Yawei Wen , Haojin Liao , Guoshan Zhang , Pengfei Xu

This paper jointly addresses three key limitations in conventional pedestrian trajectory forecasting: pedestrian perception errors, real-world data collection costs, and person ID annotation costs. We propose a novel framework, RealTraj,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Ryo Fujii , Hideo Saito , Ryo Hachiuma