mobile interaction using steganographic image on mobile display
This demonstration shows novel interaction between mobile devices and their nearby devices using digital images on a mobile display. The interaction needs neither special hardware for communication, nor additional software for existing mobile devices. In the interaction, users of mobile devices can easily interact with nearby devices by three procedures: 1) selecting an image, 2) displaying an image in full-screen mode, or 3) holding the display over a camera connected to the device. The key technology of the interaction is FPcode (Fine Picture code) which is a kind of steganography and can be invisibly embedded in printed images. To enable FPcode to be applied to images on mobile displays, we have developed a camera control method for reducing the influence of moire stripes on the display and variations in display brightness. In the demonstration, we show an application using FPcode on a mobile display.
mobile display steganography mobile phones image processing user interface mobile ticket mobile gaming