Paul Beardsley is doing research in computer vision. He has a Ph.D. from the University of Oxford, where he produced foundational work in 3D computer vision. He jointly received one of the R&D 100 Awards for the most significant inventions of 2006 in connection with his work on live registration of helicopter-mounted video with street maps, for use by emergency services. Armed with formal training and industry experience in software engineering and an interest in robust real-time vision systems, he has crafted a research agenda that ranges from applied to fundamental. On the applied side, he uses vision for human interaction, and for human logistics such as crowd counting. His more fundamental projects are in robotic vision, including the use of sensor swarms of heterogeneous mobile sensors to recover models of complex indoor and outdoor environments.