Visible Light Communication via Temporal Psycho-Visual Modulation

In this paper we propose a new paradigm for visible light communication (VLC) using the emerging display technology of Temporal Psycho-Visual Modulation (TPVM) that exploits the interaction between human visual system and modern electro-optical display devices. Unlike traditional VLC, no specifically designed light emitter and receiver are required. In the proposed system, light projector is used as the information source and digital cameras act as information decoder. The emitted light is designed in a specific way such that it can carry meaningful information (or simply works as an illumination source) for human eyes while other message can be decoded by the digital camera due to the fundamental difference in the imaging mechanism of the human eye and digital devices. We further describe two applications of this new type of VLC in ubiquitous augmented reality and illegal camcorder-recording prevention with extensive experimental results.