Digital Watermarking Method for Printed Materials Embedding in Hue Component
IIH-MSP '09 Proceedings of the 2009 Fifth International Conference on Intelligent Information Hiding and Multimedia Signal Processing
PixNet: interference-free wireless links using LCD-camera pairs
Proceedings of the sixteenth annual international conference on Mobile computing and networking
Mobile application development: web vs. native
Communications of the ACM
Dynamic and invisible messaging for visual MIMO
WACV '12 Proceedings of the 2012 IEEE Workshop on the Applications of Computer Vision
Using mobile devices to enable visual multiplexing on public displays: three approaches compared
Proceedings of the 12th International Conference on Mobile and Ubiquitous Multimedia
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A method has been developed for detecting watermarks using a smartphone. A smartphone with a reader application based on this method and held over a watermarked printed image can detect a watermark in the image and use it to obtain corresponding product information. To reduce the computational complexity of a full search for each possible geometrical correction of the image, the locations where watermarks are not embedded are determined in advance. Image quality is maintained by not embedding watermarks for calibration purposes. System testing demonstrated that the developed method is practical to some degree under the constraint that the camera must be positioned within a restricted search range with respect to the printed image.