Projection method of laser pointer large screen

Laser pointer mouse positioning system and method; The laser pointer mouse positioning system includes a laser pointer mouse and a projector. The technical solution of the present invention adopts a camera provided on the projector, and a laser pointer mouse is provided with controls corresponding to the left and right buttons of the mouse Left button and control right button. When the control left button or control right button on the laser pointer is pressed, the projected image is obtained through the camera for positioning, and the relative position of the laser spot on the projected image is recognized to obtain the mouse cursor position in the operating system. The coordinates enable the operating system to perform corresponding operations at the coordinates, thereby realizing the operation of laser pointer and mouse remote control, allowing users to obtain an intuitive and accurate operation experience, and is not affected by the distance of the Laser pointer and mouse, so as to facilitate teaching, speech, etc., to achieve laser pointer The function of the pen mouse pointer. Large-screen projections are becoming more and more widely used in multimedia teaching, lectures, remote meetings and other activities. In order to attract the audience, the speaker usually stands on the side of the projection screen and uses the laser light emitted by the laser pointer to indicate the key content of the speech on the projection screen to improve the concentration of the audience. However, the existing laser pointer usually only has the function of turning pages, and does not have the function of mouse operation. When mouse operation is required, the speaker must return to the computer to perform the mouse operation. The operation is troublesome and the audience's concentration is easily affected by interrupting the speech.