Interactive projection system and interactive method

Abstract

The invention relates to an interactive projection system, comprising a control device, a projection device, an acquisition device and an interactive pen; firstly, the control device controls the projection device to lead a calibrated picture to be projected to a projection area, and then acquisition is carried out by the acquisition device, and the control device works out the projection transformation matrix according to the collected calibrated image and the original calibrated picture in the control device, so as to realize simple and rapid calibration of the system; when interactive operation is carried out, LED is triggered and gives out infrared light when the LED interactive pen is contacted with a screen, and capture is carried out by the image acquisition device in a real time manner; in addition, the software is tested by the developed interactive pen to realize location of the LED interactive pen; according to the obtained projection transformation matrix by calibration, the position information of the projection transformation matrix is transformed into mouse position information in the control device and is projected out by the projection device, thereby realizing interactive operation on the projection screen.

Description

【Technical field】 [0001] The present invention relates to a projection system, in particular to an interactive projection system and an interactive method thereof. 【Background technique】 [0002] Traditional interactive projection systems mostly use front projection or rear projection, which require projection screens made of special materials, such as pressure-sensitive, magnetic-sensitive, or projection screens equipped with ultrasonic and infrared probes, in order to realize the writing pen on the projection screen. Due to the limitations of the material and processing technology of the projection screen, the detection and positioning of the system is very expensive and cannot be displayed on a large screen. [0003] In the traditional visual-based interactive operating system, the projector and the photoelectric detection head are placed separately, and the separation of the optical axis causes a large deformation of the detected image, which is fused with the distortion...

AI Technical Summary

Problems solved by technology

The beam splitter is used to realize the common optical axis of the photodetector and the projection lens for system calibration. First, the requirements for the positioning of the beam splitter and the beam splitter itself are very high, and this system calibration method relies on manual adjustment of the position of the beam splitter until Adjusting to the common optical axis of the projector body and the photoelectric detection head, its positioning accuracy is limited, and it is impossible to correct and adjust the distortion of the projector body and the photoelectric detection head itself, so the calibration efficiency of this system and the positioning accuracy of the interactive pen are low

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