Visual-Feedback-Based Frame-by-Frame Synchronization for 3000 fps Projector–Camera Visual Light Communication

This paper proposes a novel method for synchronizing high frame-rate (HFR) camera with an HFR projector, using visual feedback-based synchronization algorithm streaming video sequences in real time on visible-light communication (VLC)-based system. The frame rates of the and projector are equal, their phases synchronized. A is used to mitigate complexities stabilization issues wire-based triggering long-distance systems. projects binary pattern modulated at 3000 fps. system operates fps, which can capture generate delay signal be given next clock cycle so that it matches phase projector. To test performance, we projector–camera-based VLC proposed provides maximum bandwidth utilization high-throughput transmission ability reduces data redundancy efficiently. transmitter encodes input sequence into gray code, projected via high-definition multimedia interface form images 590 × 1060. At receiver, monochrome simultaneously decode 12-bit 512 reconstruct color 60 efficiency evaluated by offline live sequences, single dual projectors, providing multiple-projector-based results show fps was successfully synchronized single-projector 1500 dual-projector It confirmed also applied systems, autonomous vehicles, surveillance applications.