Interactive projection system and interactive method

A projection system and interactive technology, applied in the field of projection systems, can solve the problems of limited positioning accuracy, inability to correct and adjust, and low positioning accuracy of an interactive pen, and achieve the effects of high calibration accuracy and simple operation.

Inactive Publication Date: 2010-09-22
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 Adjustin

Method used

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  • Interactive projection system and interactive method
  • Interactive projection system and interactive method
  • Interactive projection system and interactive method

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Embodiment Construction

[0039] Further description will be made below in conjunction with the accompanying drawings.

[0040] like figure 1 As shown, an interactive projection system according to an embodiment of the present invention includes: a projection device 1 , an interactive pen 2 , a collection device 3 and a control device 4 . The projection device 1 and the collection device 3 are connected in communication with the control device 4 , and the projection device 1 and the control device 4 and the collection device 3 and the control device 4 can be connected by wired communication or wireless communication. The control device 4 drives and controls the projection device 1 and the acquisition device 3 to work.

[0041] The interactive pen 2 is a signal transmitting device. In order to avoid interference from external factors such as ambient light, the interactive pen 2 of this embodiment uses an infrared signal as an interactive signal. like figure 2 As shown, in this embodiment, the inter...

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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...

Claims

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Application Information

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IPC IPC(8): G02B21/00G06F3/033G06F3/0354
Inventor 宋展陈曦张小婷钟志杰
Owner SHENZHEN INST OF ADVANCED TECH
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