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Localization of wearable users using invisible retro-reflective markers and an IR camera
2005
Stereoscopic Displays and Virtual Reality Systems XII
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In order to avoid the problems, we propose a new localization method which is based on using an IR camera and invisible markers consisting of translucent retro-reflectors. ...
Many localization methods in indoor environments have been proposed. One of the methods estimates user's position using IR beacons or visual markers. ...
Section 2 describes a localization system using invisible markers and IR camera. In Section 3, experimental results with a prototype system are described. ...
doi:10.1117/12.586382
fatcat:f6zqryb5hrbkrd6ksjjbxugshq
Localization system for large indoor environments using invisible markers
2008
Proceedings of the 2008 ACM symposium on Virtual reality software and technology - VRST '08
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We propose a user localization system that uses invisible markers for wearable augmented reality (AR) in large indoor environments. ...
To construct environments for the localization system, we developed an initialization tool that calibrates the alignment of the markers from photographs taken by flash illumination using a digital still ...
Conclusion We proposed a user localization system and initialization tool using invisible markers for wearable AR. ...
doi:10.1145/1450579.1450660
dblp:conf/vrst/NakazatoKY08
fatcat:kao6qx64o5betnuu3z4vh7prme
Geometrically-Correct Projection-Based Texture Mapping onto a Deformable Object
2014
IEEE Transactions on Visualization and Computer Graphics
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The geometrically correct projection-based texture mapping onto a deformable marker is conducted using the measurement of the 3D shape through the detection of the retro-reflective marker on the surface ...
We demonstrate a new invisible marker embedded into a deformable substrate and an algorithm that identifies deformations to project geometrically correct textures onto the deformable object. ...
We employ a half-transparent retro-reflective material for the construction of the marker-pattern. ...
doi:10.1109/tvcg.2014.25
pmid:24650981
fatcat:ayh5qsuiefcr5gdn3nuclqfzs4
Intelligent Environmental Recognition Features of "Robosofa"
2012
Elektronika ir Elektrotechnika
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Presented system automatically localizes the position of the "smart" furniture based on certain color markers. ...
The video camera, sixth infrared range sensors and the motorized furniture were used in our mobile system. ...
In work, they propose a new localization method which is based on invisible markers that consist of translucent retro-reflectors. ...
doi:10.5755/j01.eee.117.1.1045
fatcat:is6ghigluzcdtah2met57m7kyq
Gait analysis using a single depth camera
2015
2015 IEEE Global Conference on Signal and Information Processing (GlobalSIP)
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Since current optical diagnostic and patient assessment tools tend to be expensive and not portable, this paper proposes a novel marker-based tracking system using a single depth camera which provides ...
The proposed system can simultaneously generate motion patterns even within a complex background using the proposed geometric model-based algorithm and autonomously provide gait analysis results. ...
The proposed multimedia system provides a convenient solution for track-ing multiple retro-reflective markers simultaneously, solving a geometric model-based identification problem even within a complex ...
doi:10.1109/globalsip.2015.7418202
dblp:conf/globalsip/YeYSSK15
fatcat:iyxb2j64qfc4nb2eokst6tg6ya
Performance Analysis of an Optoelectronic Localization System for Monitoring Brain Lesioning with Proton Beams
2007
IEEE Engineering in Medicine and Biology Society. Conference Proceedings
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The system consists of three high-resolution cameras and dedicated software to locate a marker set in space. ...
We have studied the performance of an optoelectronic localization system for monitoring brain lesioning with narrow proton beams. ...
Two retro-reflective marker sets are tracked by an optoelectronic localization system (OLS). ...
doi:10.1109/iembs.2007.4353387
pmid:18003053
fatcat:uacgtipm2vedxlsbep3wzpsxze
Mobile mapping for the automated analysis of road signage and delineation
2008
IET Intelligent Transport Systems
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Using the system, it has been shown that retro-reflectors, and in particular road signs, can be identified by nature of their reflective properties. ...
This novel system allows both geometric and photometric measurements to be made on objects in a scene. ...
A more detailed overview of the entire acquisition system is available in [10] where the system is used to classify different road signage materials, that is, locally illuminated signs, diffuse reflecting ...
doi:10.1049/iet-its:20060083
fatcat:2rfv6f5nbjfknarnfbyymvkpoy
Soft Tissue Surface Tracking for Open Liver Surgery
2010
CURAC Jahrestagung
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In this paper we introduce a new method to track deformable structures with the use of single retro-reflective markers. ...
Among them one can highlight, deformation, presence of unexpected markers, occlusions, simultaneous use of single markers and instruments, etc. ...
The tracking is based on information provided by market available retro-reflective passive single markers and optical measurement systems. ...
dblp:conf/curac/Oliveira-SantosHPW10
fatcat:64v7dq2vsfb6xnwsanjgq7f55u
Scape: supporting stereoscopic collaboration in augmented and projective environments
2004
IEEE Computer Graphics and Applications
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W ith the trend toward scientific and economic globalization, users and researchers alike have a great interest in tools and infrastructures that let multiple users at local and remote sites effectively ...
interfaces. 1,2 Recent efforts have attempted to develop tools and infrastructures to support local and remote collaboration in 3D virtual and augmented environments. 3, 4 Here we introduce a collaborative ...
: (a) conceptual illustration and (b) compact prototype. a) Difference in retro-reflection from diffusing and specular reflections, and (b) Characterization of retro-reflective material. ...
doi:10.1109/mcg.2004.1255811
pmid:15384670
fatcat:x7h2qfhdyrdmlc5j2wwul72vw4
Image-based retro-reflectivity measurement of traffic signs in day time
2015
Advanced Engineering Informatics
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., Image-based retro-reflectivity measurement of traffic signs in day time, Adv. Eng. Informat. (2015), http:// dx. ...
A 2 t ¼ ES x K c ð16Þ cost roadway assets such as traffic signs, mile markers, and 49 guardrails is critical to safety of the existing transportation 50 systems. ...
It captures reflected light
200
using a stereoscopic system made up of two high-resolution cam-
201
eras [15]. ...
doi:10.1016/j.aei.2015.08.003
fatcat:7bu4cewbcrgsvp3dimx5t5onfa
System and Interface Framework for SCAPE as a Collaborative Infrastructure
2004
Presence - Teleoperators and Virtual Environments
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In this paper, we discuss the design principles we have followed to conceptualize the SCAPE system and briefly summarize SCAPE's hardware implementation. ...
b) Inside-out walk-through view (a) SCAPE display (c) Outside-in workbench view (b) Inside-out walk-through view (a) SCAPE display (c) Outside-in workbench view Fig.1 SCAPE: stereoscopic collaboration ...
We also specially acknowledge 3M Inc. for generously supplying the retro-reflective film. ...
doi:10.1162/1054746041382429
fatcat:phhv5g5myvd4lnko7yje75647e
Robot-assisted Hammer Sounding Inspection of Infrastructures
人間協調型移動ロボットによるコンクリート打音検査記録システム
2015
Journal of the Robotics Society of Japan
人間協調型移動ロボットによるコンクリート打音検査記録システム
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The goal is to create a robot that assists the human inspector during hammer sounding inspections that detects invisible defects under the surface of concrete by striking the surface with a hammer and ...
This work presents a human-robot cooperative approach for infrastructure inspection. ...
concrete block wall
Fig Fig. 15 3.7 [m 2 ] 244 4.2 [min] Fig. 16 21.8 [m 2 ] 385 13.1 [min]
Fig. 5Depth camera data of retro-reflective marker with and without ND filter for preventing saturation ...
doi:10.7210/jrsj.33.548
fatcat:c6h7urdvujb7bdajj4fdr5mcdi
Kinematics Analysis Multimedia System for Rehabilitation
[chapter]
2015
Lecture Notes in Computer Science
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Since current optical diagnostic and patient assessment tools tend to be expensive and not portable, this paper proposes a novel marker-based tracking system using a single depth camera which provides ...
The proposed system can simultaneously generate motion patterns even within a complex background using the proposed geometric model-based algorithm and autonomously provide gait analysis results using ...
The proposed multimedia system provides a convenient solution for tracking multiple retro-reflective markers simultaneously, solving a geometric model-based identification problem even within a complex ...
doi:10.1007/978-3-319-23222-5_69
fatcat:o3wbey3aanghzmbs3tyk4msr7a
Enhanced Absolute Accuracy of an Industrial Milling Robot Using Stereo Camera System
2016
Procedia Technology - Elsevier
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To measure the position and orientation of the robot tool center point, a specific adapter with retro reflective markers is mounted on the spindle. ...
In this publication an approach for increasing the absolute positioning accuracy of an industrial milling robot with help of a stereo camera system is presented. ...
Andreas Rietdorf, AICON 3D Systems GmbH and every member of the project team APT machining at Fraunhofer IFAM Stade. ...
doi:10.1016/j.protcy.2016.08.050
fatcat:x33utjzqbrbp5ff7ycotparcwy
A Depth Camera Motion Analysis Framework for Tele-rehabilitation: Motion Capture and Person-Centric Kinematics Analysis
2016
IEEE Journal on Selected Topics in Signal Processing
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This paper proposes a novel framework for motion capture using only a single depth camera, which is portable and cost effective compared to most industry-standard optical systems, without compromising ...
, and significant performance improvements in terms of accuracy and execution time compared to a previous Kinect-based system. ...
OPTICAL MOTION CAPTURE SYSTEM The task of the proposed optical motion capture system is to simultaneously track multiple retro-reflective markers using a single IR depth camera, irrespective of the overlying ...
doi:10.1109/jstsp.2016.2559446
fatcat:mdkuy374trcdxflid7l5d27bhu
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