01557447

Component

https://doi.org/10.3141/2528-06

An approach for vehicle conflict analysis based on three-dimensional (3-D) vehicle detection is presented. Techniques for quantitative conflict measurements often use a point trajectory representation for vehicles. More accurate conflict measurement can be facilitated with a region-based vehicle representation instead. This paper describes a computer vision approach for extracting vehicle trajectories from video sequences. The method relied on a fusion of background subtraction and feature-based tracking to provide a three-dimensional (3-D) cuboid representation of the vehicle. Standard conflict measures, including time to collision and postencroachment time, were computed with the use of the 3-D cuboid vehicle representations. The use of these conflict measures was demonstrated on a challenging data set of video footage. Results showed that the region-based representation could provide more precise calculation of traffic conflict indicators compared with approaches based on a point representation.

01582941

15-4892

English

pp 49–59

2015

Transportation Research Record: Journal of the Transportation Research Board

9780309369084

Print

Figures (8) ; Photos; References (30) ; Tables (1)

Automatic data collection systems; Computer vision; Detection and identification technologies; Highway safety; Traffic conflicts

Data and Information Technology; Highways; Operations and Traffic Management; Planning and Forecasting; Safety and Human Factors; I85: Safety Devices used in Transport Infrastructure

TRIS, TRB, ATRI

Dec 30 2014 1:38PM

• Behavior Analysis Using a Multilevel Motion Pattern Learning Framework
• Enhancing Traffic Incident Detection by Using Spatial Point Pattern Analysis on Social Media
• Extended Implementation Method for Virtual Sensors: Web-Based Real-Time Transportation Data Collection and Analysis for Incident Management
• Feature-Based Pothole Detection in Two-Dimensional Images
• Integrated Method for Online Calibration of Real-Time Traffic Network Management Systems
• On Missing Traffic Data Imputation Based on Fuzzy C-Means Method by Considering Spatial–Temporal Correlation
• Optimization of Police Facility Locationing
• Rapid Accelerometer Measurements of Vehicle Bumps at Bridge Approaches
• Sample Size Reduction Method Based on Data Fusion for Freeways with Fixed Detectors
• Supervised Intelligence Committee Machine to Evaluate Field Performance of Photocatalytic Asphalt Pavement for Ambient Air Purification
• Transportation Routing Map Abstraction Approach: Algorithm and Numerical Analysis
• Using Unmanned Aerial Vehicles to Conduct Site Inspections of Erosion and Sediment Control Practices and Track Project Progression