Kinect technology-based intelligent blackboard writing system

The invention discloses a Kinect technology-based intelligent blackboard writing system. The system comprises a computer, a display, a sensing camera, an environmental-friendly touch handwriting pen and an optical touch panel, wherein the sensing camera is a special information receiver, and only can identify an operator; the optical touch panel is a modern teaching and high-definition demonstration terminal integrating a touch technology, an optical display technology and a whiteboard technology; the environmental-friendly touch handwriting pen is a high-precision electronic pen, and an operation method is that an interface can be started as long as the operator holds the pen in a hand to perform a gesture input and a command is input; the environmental-friendly touch pen contains a pen point with a flat end surface, namely, the pen point is directly set as a soft plane body perpendicular to a pen holder at the front end of the pen holder and is limited by the flat end surface duringuse, and a contact surfac