Interactive holographic blackboard system

The embodiment of the invention provides an interactive holographic blackboard system, comprising an L-type projector, a positioning pointer, a motion capturing device and a server, wherein the serveris respectively connected with the L-type projector and the motion capture device. The L-type projector is used for receiving image signals and switching signals input from the server, projecting images to preset vertical plane and horizontal plane vectors by using the image signals, and switching projected contents according to the switching signals. The positioning bullwhip is used for moving the position with the operation of the user and transmitting a bullwhip positioning signal; the action catching device is used for catching the pointer positioning signal and outputting the pointer positioning signal to the server; the server is used for outputting the image signal, determining the real-time position of the positioning whip according to the positioning signal of the whip, and outputting the switching signa