Seeing in the Rain

摘要

Researchers at Carnegie Mellon University have written software that allowed a projector to shine light through simulated rain without illuminating the water drops. The system used a camera to predict the downward path of droplets as they entered the top of the projector's beam. Then software directed the projector to selectively black out its beam to avoid the droplets as they fell. In one test, the system could avoid lighting up 84 percent of the droplets.