Spatiotemporal resolution measurement techniques for event-based sensors using dynamic virtual targets

As affordable event-based sensors (EBSs) proliferate, general methods are needed to characterize sensitivity and spatiotemporal resolution for standardized system-level performance metrics. We propose a nonlinear transfer function description of EBS response and, using display-based dynamic virtual targets, present techniques to measure spatiotemporal resolution under controlled laboratory conditions. The resulting measurements provide a quantitative characterization and permit realistic comparison with conventional frame-based cameras. Subsequent analysis connects the measured response of the system to standard performance metrics such as the modulation transfer function. We discuss applicability across disparate scene conditions and sensor configurations and outline potential improvements toward a more general characterization method.