Performance Characterization of Reactive Visual Systems

Abstract

We consider the class of projector-camera systems that adaptively image and illuminate a dynamic environment. Examples include adaptive front lighting in vehicles, dynamic stage performance lighting, adaptive dynamic range imaging and volumetric displays. A simulator is developed to explore the design space of such Reactive Visual Systems. Simulations are conducted to characterize system performance by analyzing the effects of end-to-end latency, jitter, and prediction algorithm complexity. Key operating points are identified where systems with simple prediction algorithms can outperform systems with more complex prediction algorithms. Based on the lessons learned from simulations, a low latency and low jitter, tight closed-loop reactive visual system is built. For the first time, we measure end-to-end latency, perform jitter analysis, investigate various prediction algorithms and their effect on system performance, compare our system's performance to previous work, and demonstrate dis-illumination of falling snow-like particles and photography of fast moving scenes.