Invariant Descriptors for 3D Object Recognition and Pose
IEEE Transactions on Pattern Analysis and Machine Intelligence - Special issue on interpretation of 3-D scenes—part I
The active badge location system
ACM Transactions on Information Systems (TOIS)
Interacting with paper on the DigitalDesk
Communications of the ACM - Special issue on computer augmented environments: back to the real world
BrightBoard: a video-augmented environment
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
The anatomy of a context-aware application
MobiCom '99 Proceedings of the 5th annual ACM/IEEE international conference on Mobile computing and networking
Design and technology for Collaborage: collaborative collages of information on physical walls
Proceedings of the 12th annual ACM symposium on User interface software and technology
CyberCode: designing augmented reality environments with visual tags
DARE '00 Proceedings of DARE 2000 on Designing augmented reality environments
A Flexible New Technique for Camera Calibration
IEEE Transactions on Pattern Analysis and Machine Intelligence
Introductory Techniques for 3-D Computer Vision
Introductory Techniques for 3-D Computer Vision
IEEE Internet Computing
Multi-Camera Multi-Person Tracking for EasyLiving
VS '00 Proceedings of the Third IEEE International Workshop on Visual Surveillance (VS'2000)
LocALE: a Location-Aware Lifecycle Environment for Ubiquitous Computing
ICOIN '01 Proceedings of the The 15th International Conference on Information Networking
Marker Tracking and HMD Calibration for a Video-Based Augmented Reality Conferencing System
IWAR '99 Proceedings of the 2nd IEEE and ACM International Workshop on Augmented Reality
A Generic Location Event Simulator
UbiComp '02 Proceedings of the 4th international conference on Ubiquitous Computing
Using visual tags to bypass Bluetooth device discovery
ACM SIGMOBILE Mobile Computing and Communications Review
A relative positioning system for co-located mobile devices
Proceedings of the 3rd international conference on Mobile systems, applications, and services
Evaluating lateration-based positioning algorithms for fine-grained tracking
DIALM-POMC '05 Proceedings of the 2005 joint workshop on Foundations of mobile computing
Sensing and visualizing spatial relations of mobile devices
Proceedings of the 18th annual ACM symposium on User interface software and technology
A reflective middleware for controlling smart objects from mobile devices
Proceedings of the 2005 joint conference on Smart objects and ambient intelligence: innovative context-aware services: usages and technologies
Tangible programming in the classroom: a practical approach
CHI '06 Extended Abstracts on Human Factors in Computing Systems
Broadband Ultrasonic Location Systems for Improved Indoor Positioning
IEEE Transactions on Mobile Computing
Centralized and Distributed Multi-view Correspondence
International Journal of Computer Vision
Multi-sensory and Multi-modal Fusion for Sentient Computing
International Journal of Computer Vision
Designing tangible programming languages for classroom use
Proceedings of the 1st international conference on Tangible and embedded interaction
Interacting with mobile services: an evaluation of camera-phones and visual tags
Personal and Ubiquitous Computing
Tangible programming in the classroom with tern
CHI '07 Extended Abstracts on Human Factors in Computing Systems
mRDP: An HTTP-based lightweight semantic discovery protocol
Computer Networks: The International Journal of Computer and Telecommunications Networking
Pervasive 2D Barcodes for Camera Phone Applications
IEEE Pervasive Computing
Future Play '07 Proceedings of the 2007 conference on Future Play
Realfind: managing personal items in the physical world
CHI '08 Extended Abstracts on Human Factors in Computing Systems
IDC '08 Proceedings of the 7th international conference on Interaction design and children
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Bokode: imperceptible visual tags for camera based interaction from a distance
ACM SIGGRAPH 2009 papers
RF-Based Initialisation for Inertial Pedestrian Tracking
Pervasive '09 Proceedings of the 7th International Conference on Pervasive Computing
International Journal of Human-Computer Studies
Developing mobile services for specific user groups using virtual environments
Proceedings of the 8th International Conference on Mobile and Ubiquitous Multimedia
Study on an indoor tracking system with infrared projected markers for large-area applications
Proceedings of the 8th International Conference on Virtual Reality Continuum and its Applications in Industry
A web 2.0 platform to enable context-aware mobile mash-ups
AmI'07 Proceedings of the 2007 European conference on Ambient intelligence
Endoscopic navigation for minimally invasive suturing
MICCAI'07 Proceedings of the 10th international conference on Medical image computing and computer-assisted intervention
Developing mobile ubiquitous services for the elderly using virtual environments
BEBI'09 Proceedings of the 2nd WSEAS international conference on Biomedical electronics and biomedical informatics
Obstacle avoidance of redundant manipulators using neural networks based reinforcement learning
Robotics and Computer-Integrated Manufacturing
Cluster tagging: robust fiducial tracking for smart environments
LoCA'06 Proceedings of the Second international conference on Location- and Context-Awareness
Jittering reduction in marker-based augmented reality systems
ICCSA'06 Proceedings of the 6th international conference on Computational Science and Its Applications - Volume Part I
Automatic updating of a book storage database in a ubiquitous library information system
UIC'06 Proceedings of the Third international conference on Ubiquitous Intelligence and Computing
Development of direct manipulation interface for collaborative VR/MR workspace
SCIA'05 Proceedings of the 14th Scandinavian conference on Image Analysis
Real-world interaction with camera phones
UCS'04 Proceedings of the Second international conference on Ubiquitous Computing Systems
Dependable coding of fiducial tags
UCS'04 Proceedings of the Second international conference on Ubiquitous Computing Systems
Audio location: accurate low-cost location sensing
PERVASIVE'05 Proceedings of the Third international conference on Pervasive Computing
Device-enabled authorization in the grey system
ISC'05 Proceedings of the 8th international conference on Information Security
A middleware for the deployment of ambient intelligent spaces
Ambient Intelligence in Everyday Life
Image texts-based navigation for augmented game
Edutainment'06 Proceedings of the First international conference on Technologies for E-Learning and Digital Entertainment
A new marker design for a robust marker tracking system against occlusions
Computer Animation and Virtual Worlds
LinkedQR: improving tourism experience through linked data and QR codes
UCAmI'12 Proceedings of the 6th international conference on Ubiquitous Computing and Ambient Intelligence
Visualization of physical library shelves to facilitate collection management and retrieval
Proceedings of the 5th ACM SIGCHI symposium on Engineering interactive computing systems
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Sentient Computing provides computers with perception so that they can react and provide assistance to user activities. Physical spaces are made sentient when they are wired with networks of sensors capturing context data, which is communicated to computing devices spread through the environment. These devices interpret the information provided and react by performing the actions expected by the user. Among the types of context information provided by sensors, location has proven to be especially useful. Since location is an important context that changes whenever the user moves, a reliable location-tracking system is critical to many sentient applications. However, the sensor technologies used in indoor location tracking are expensive and complex to deploy, configure and maintain. These factors have prevented a wider adoption of Sentient Computing in our living and working spaces. This paper presents TRIP, a low-cost and easily deployable vision-based sensor technology addressing these issues. TRIP employs off-the-shelf hardware (low-cost CCD cameras and PCs) and printable 2-D circular markers for entity identification and location. The usability of TRIP is illustrated through the implementation of several sentient applications.