oai-hal-tel-00953503v1
type: Dataset
description: The main objective of this thesis is to develop a system for monitoring the close environment of a level crossing. It aims to develop a perception system allowing the detection and the evaluation of dangerous situations around a level crossing. To achieve this goal, the overall problem of this work has been broken down into three main stages. In the first stage, we propose a method for optimizing automatically the location of video sensors in order to cover optimally a level crossing environment. This stage addresses the problem of cameras positioning and orientation in order to view optimally monitored scenes. The second stage aims to implement a method for objects tracking within a surveillance zone. It consists first on developing robust algorithms for detecting and separating moving objects around level crossing. The second part of this stage consists in performing object tracking using a Gaussian propagation optical flow based model and Kalman filtering. On the basis of the previous steps, the last stage is concerned to present a new model to evaluate and recognize potential dangerous situations in a level crossing environment. This danger evaluation method is built using Hidden Markov Model and credibility model. Finally, synthetics and real data are used to test the effectiveness and the robustness of the proposed algorithms and the whole approach by considering various scenarios within several situations. This work is developed within the framework of PANsafer project (Towards a safer level crossing), supported by the ANR-VTT program (2008) of the French National Agency of Research. This project is also labelled by Pôles de compétitivité "i-Trans" and "Véhicule du Futur". All the work, presented in this thesis, has been conducted jointly within IRTES-SET laboratory from UTBM and LEOST laboratory from IFSTTAR.
issued: 2026-05-06T04:56:47.477242
language: fr
modified: 2026-05-06T04:56:47.477247
title: Reconstruction and analysis of moving objects trajectories from monocular images sequences, using Hidden Markov Model and Dempster-Shafer Theory - Application for evaluating dangerous situations in level crossings
contact point: Organization
  fn: CCSD
keyword: 2d-trajectory-prediction
keyword: decision-systems
keyword: dempster-shafer-theory
keyword: descriptive-geometry
keyword: detection-dobjets
keyword: evaluation-of-dangerous-situations
keyword: hmm
keyword: infoeu-reposemanticsdoctoralthesis
keyword: infoinfo-ticomputer-science-csimage-processing-eessiv
keyword: level-crossings
keyword: objects-detection-and-tracking
keyword: optimization
keyword: optomisation
keyword: passage-a-niveau
keyword: securite
keyword: situations-dangereuses
keyword: suivi-dobjets
keyword: systeme-de-perception
keyword: theses
keyword: video-perception-systems
landing page: https://theses.hal.science/tel-00953503

https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-tel-00953503v1/resource/58d9a165-99ba-4556-896e-b37355c5ab35
type: Distribution
format: HTML
issued: 2026-05-06T04:56:47.479427
modified: 2026-05-06T04:56:47.454183
title: Reconstruction and analysis of moving objects trajectories from monocular images sequences, using Hidden Markov Model and Dempster-Shafer Theory - Application for evaluating dangerous situations in level crossings
access URL: https://theses.hal.science/tel-00953503

test_moissonnage_selune
type: Agent