CyberCode: designing augmented reality environments with visual tags
DARE '00 Proceedings of DARE 2000 on Designing augmented reality environments
Algorithms for Image Processing and Computer Vision
Algorithms for Image Processing and Computer Vision
Reed-Solomon Codes and Their Applications
Reed-Solomon Codes and Their Applications
PixelFlex: a reconfigurable multi-projector display system
Proceedings of the conference on Visualization '01
Scalable alignment of large-format multi-projector displays using camera homography trees
Proceedings of the conference on Visualization '02
Using a steerable projector and a camera to transform surfaces into interactive displays
CHI '01 Extended Abstracts on Human Factors in Computing Systems
Barcode Readers using the Camera Device in Mobile Phones
CW '04 Proceedings of the 2004 International Conference on Cyberworlds
Active Pursuit Tracking in a Projector-Camera System with Application to Augmented Reality
CVPR '05 Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05) - Workshops - Volume 03
Projector phone: a study of using mobile phones with integrated projector for interaction with maps
Proceedings of the 10th international conference on Human computer interaction with mobile devices and services
Bokode: imperceptible visual tags for camera based interaction from a distance
ACM SIGGRAPH 2009 papers
Computational Photography: Mastering New Techniques for Lenses, Lighting, and Sensors
Computational Photography: Mastering New Techniques for Lenses, Lighting, and Sensors
Unsynchronized 4D barcodes: coding and decoding time-multiplexed 2D colorcodes
ISVC'07 Proceedings of the 3rd international conference on Advances in visual computing - Volume Part I
A taxonomy and analysis of camera calibration methods for traffic monitoring applications
IEEE Transactions on Intelligent Transportation Systems
Rear-lamp vehicle detection and tracking in low-exposure color video for night conditions
IEEE Transactions on Intelligent Transportation Systems
Real-world interaction with camera phones
UCS'04 Proceedings of the Second international conference on Ubiquitous Computing Systems
PixNet: LCD-camera pairs as communication links
Proceedings of the ACM SIGCOMM 2010 conference
Enabling vehicular visible light communication (V2LC) networks
VANET '11 Proceedings of the Eighth ACM international workshop on Vehicular inter-networking
COBRA: color barcode streaming for smartphone systems
Proceedings of the 10th international conference on Mobile systems, applications, and services
Demo: VisualComm - new robust channel of file transfer in mobile communications
Proceedings of the 10th international conference on Mobile systems, applications, and services
A method for detecting watermarks in print using smart phone: finding no mark
Proceedings of the 5th Workshop on Mobile Video
Coloured video code for in-flight data transmission
ICVS'13 Proceedings of the 9th international conference on Computer Vision Systems
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Given the abundance of cameras and LCDs in today's environment, there exists an untapped opportunity for using these devices for communication. Specifically, cameras can tune to nearby LCDs and use them for network access. The key feature of these LCD-camera links is that they are highly directional and hence enable a form of interference-free wireless communication. This makes them an attractive technology for dense, high contention scenarios. The main challenge however, to enable such LCD-camera links is to maximize coverage, that is to deliver multiple Mb/s over multi-meter distances, independent of the view angle. To do so, these links need to address unique types of channel distortions, such as perspective distortion and blur. This paper explores this novel communication medium and presents PixNet, a system for transmitting information over LCD-camera links. PixNet generalizes the popular OFDM transmission algorithms to address the unique characteristics of the LCD-camera link which include perspective distortion, blur, and sensitivity to ambient light. We have built a prototype of PixNet using off-the-shelf LCDs and cameras. An extensive evaluation shows that a single PixNet link delivers data rates of up to 12 Mb/s at a distance of 10 meters, and works with view angles as wide as 120 degree°.