Evaluation of Binarization Methods for Document Images
IEEE Transactions on Pattern Analysis and Machine Intelligence
Superior augmented reality registration by integrating landmark tracking and magnetic tracking
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Multi-Ring Color Fiducial Systems for Scalable Fiducial Tracking Augmented Reality
VRAIS '98 Proceedings of the Virtual Reality Annual International Symposium
ISMAR '02 Proceedings of the 1st International Symposium on Mixed and Augmented Reality
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 Time-Efficient Cascade for Real-Time Object Detection: With applications for the visually impaired
CVPR '05 Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05) - Workshops - Volume 03
Camera phone based motion sensing: interaction techniques, applications and performance study
UIST '06 Proceedings of the 19th annual ACM symposium on User interface software and technology
True Images: A Calibration Technique to Reproduce Images as Recorded
ISM '06 Proceedings of the Eighth IEEE International Symposium on Multimedia
Color targets: fiducials to help visually impaired people find their way by camera phone
Journal on Image and Video Processing
Outdoors augmented reality on mobile phone using loxel-based visual feature organization
MIR '08 Proceedings of the 1st ACM international conference on Multimedia information retrieval
Localization and Segmentation of A 2D High Capacity Color Barcode
WACV '08 Proceedings of the 2008 IEEE Workshop on Applications of Computer Vision
Blind guidance using mobile computer vision: a usability study
Proceedings of the 12th international ACM SIGACCESS conference on Computers and accessibility
Detecting and reading text in natural scenes
CVPR'04 Proceedings of the 2004 IEEE computer society conference on Computer vision and pattern recognition
Reading 1D Barcodes with Mobile Phones Using Deformable Templates
IEEE Transactions on Pattern Analysis and Machine Intelligence
Blind inverse gamma correction
IEEE Transactions on Image Processing
Color-Constant information embedding
ECCV'10 Proceedings of the 11th European conference on Trends and Topics in Computer Vision - Volume Part II
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We describe a fast algorithm to detect special multi-color markers with a camera cell phone. These color markers can be used for environmental labeling, for example, as a wayfinding aid for persons with visual impairment. Using a cascade of elemental detectors, robust detection is achieved at an extremely low computational cost. We also introduce a strategy to select surfaces for the marker that ensure very low specular reflection, thus facilitating color-based recognition.