ubiquitous computing

Using a Dual-Camera Smartphone to Recognize Imperceptible 2D Barcodes Embedded in Videos
Invisible screen-camera communication is promising in that it does not interfere with the video viewing experience. In the …
Yuki Kakui, Kota Araki, Changyo Han, Shogo Fukushima, Takeshi Naemura
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Using a Dual-Camera Smartphone to Recognize Imperceptible 2D Barcodes Embedded in Videos