Active Multi-Spot Projection for Object Tracking and Recognition

摘要

Phase-only spatial light modulators provide active pattern projection. Unlike incoherent techniques, the pattern energy is inversely proportional to the total pattern area. We refer to this flexible pattern/beamsteering system as the real-time adaptive multi-spot laser beamsteering system (RAMS-LBS). The spatial light modulator under investigation is a, 512 x 512 element, phase-only liquid crystal device recently produced by Boulder Non-linear Systems Incorporated. A laser tweezer is a powerful micromanipulation tool in both the physical and life sciences. In this study, we introduce the detection and tracking of the movement of particles that are controlled by the laser tweezers. The detection and tracking philosophy of these methods are to use optical flow and matched filter techniques. Our discussion will include different tracking protocol and some demonstrations of shape recognition. We have also developed a numerical simulation integrated with experimental implementation.