Multi-point Stereo Camera System for Controlling Safety at Railroad Crossings

Yoda, Ikushi; Sakaue, Katsuhiko; Hosotani, Daisuke

doi:10.1109/icvs.2006.46

Cited by 12 publications

(7 citation statements)

References 6 publications

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“…A volumetric analysis of the level crossing should reduce the sensitivity to these environmental factors, provided that enough detail is available. Binocular vision is a low-cost solution to obtain such a rich volumetric information about the environment and, as a result, has been already studied in the context of obstacle detection in level crossings (e.g., [7][8][9]). However, in binocular vision, the accuracy and completeness of the volumetric data depend heavily on lighting conditions, materials' textures, and distance to scene elements.…”

Section: Introductionmentioning

confidence: 99%

Laser-Based Obstacle Detection at Railway Level Crossings

et al. 2016

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This paper presents a system for obstacle detection in railway level crossings from 3D point clouds acquired with tilting 2D laser scanners. Although large obstacles in railway level crossings are detectable with current solutions, the detection of small obstacles remains an open problem. By relying on a tilting laser scanner, the proposed system is able to acquire highly dense and accurate point clouds, enabling the detection of small obstacles, like rocks laying near the rail. During an offline training phase, the system learns a background model of the level crossing from a set of point clouds. Then, online, obstacles are detected as occupied space contrasting with the background model. To reduce the need for manual on-site calibration, the system automatically estimates the pose of the level crossing and railway with respect to the laser scanner. Experimental results show the ability of the system to successfully perform on a set of 41 point clouds acquired in an operational one-lane level crossing.

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Section: Introductionmentioning

confidence: 99%

Laser-Based Obstacle Detection at Railway Level Crossings

et al. 2016

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“…Most of the implementation of prevention efforts for disasters has been based on structural and conventionalized regulations, such as Major Incident Medical Management and Support, 1-3 and thus, a scientific approach to disaster prevention has not gained much attention or interest from researchers or implementers. In addition, this system is adapted to measure movements of triage doctors and mock patients, even in outdoor environments, which is not possible with other similar humantracking systems, such as those at railroad crossings, 6 edges of railway platforms (Figure 1; available online only), 7 and the Expo Nagoya held in 2005 in Aichi Prefecture, Japan. 5 The system is designed for sensing human movements in a large, open space and keeps the trajectory record of such movements.…”

Section: Introductionmentioning

confidence: 99%

“…The system is designed for sensing human movements in a large, open space and keeps the trajectory record of such movements. In addition, this system is adapted to measure movements of triage doctors and mock patients, even in outdoor environments, which is not possible with other similar human-tracking systems, such as those at railroad crossings, 6 edges of railway platforms (Figure 1; available online only), 7 and the Expo Nagoya held in 2005 in Aichi Prefecture, Japan 8 …”

Section: Introductionmentioning

confidence: 99%

Evidence-based Effective Triage Operation During Disaster: Application of Human-trajectory Data to Triage Drill Sessions

Ohta

Yoda

Takeda

et al. 2014

Prehosp. Disaster med.

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This study has shown that this system could measure people's arrival times and the speed of their movements at the triage post, as well as where they are placed until they receive triage. Space utilization can be improved by efficiently planning and controlling the positioning of arriving patients. Based on the results, it has been suggested that for triage operation, it is necessary to efficiently plan and control the placement of patients in order to use strategically limited spatial resources.

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“…Usually, a stereo-camera system has been used to obtain the distance information (Yoda et al, 2006;Agrawal et al, 2006). However, there exist uncertainties in feature point matching and it takes too long to be implemented in realtime.…”

Section: Coordinates For Human-tracking Controlmentioning

confidence: 99%

Networked Sensor - Aided Tracking of Walking Human in Robotic Space

Jin

2013

International Journal of Advanced Robotic Systems

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The robots that will be needed in the near future are human-friendly robots that are able to coexist with humans and support humans effectively. To realize this, it is necessary for a robot to carry out human tracking as one of its human-affinitive movements.In this research, a predictable robotic space is introduced in order for a robot to follow a walking human by the shortest time trajectory. The mobile robot is controlled to follow the walking human using distributed networked sensors. The moving object is assumed to be a pointobject and projected onto an image plane to form a geometrical constraint equation that provides position data of the object based on the kinematics of the robotic space. The computer simulation and experimental results on the mobile robot's success in estimating information and following a walking human are presented.

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Multi-point Stereo Camera System for Controlling Safety at Railroad Crossings

Cited by 12 publications

References 6 publications

Laser-Based Obstacle Detection at Railway Level Crossings

Laser-Based Obstacle Detection at Railway Level Crossings

Evidence-based Effective Triage Operation During Disaster: Application of Human-trajectory Data to Triage Drill Sessions

Networked Sensor - Aided Tracking of Walking Human in Robotic Space

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