1. An interactive video display system comprising: a display configured to project video images onto a surface; a strobing lamp configured to illuminate the surface using strobed light; a camera having exposures synchronized to the strobed light, the camera configured to have a field of view that includes the surface; and a processing system configured to detect images of a human in the field of view using the camera, and to control the display so that the projected video images are changed based on an interaction between the human and the projected video images.