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Method used by photoelectric interactive projection module to eliminate optical interference out of projection region

A technology of interactive projection and projection area, applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc., can solve the problems of low processing efficiency, skipping, broken pens, etc., to improve processing efficiency and reduce jumping pen effect

Inactive Publication Date: 2016-07-27
RETURNSTAR INTERACTIVE TECH GRP
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Problems solved by technology

Then when there is too much interference from external light, processing multiple light sources will cause problems such as low processing efficiency, and there may also be pen jumps and broken pens caused by misjudgment.

Method used

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  • Method used by photoelectric interactive projection module to eliminate optical interference out of projection region
  • Method used by photoelectric interactive projection module to eliminate optical interference out of projection region
  • Method used by photoelectric interactive projection module to eliminate optical interference out of projection region

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Embodiment Construction

[0048] Please refer to Figure 1 to Figure 6 As shown, the photoelectric interactive projection module eliminates the method of light interference outside the projection area, and the method includes the following steps:

[0049] Step 1. Cutting and arranging the positioning points on the PC side, and projecting the positioning points through the projector; The number of vertical positioning points and the shrinkage ratio of the positioning points are used to cut and arrange each positioning point. The specific cutting and arrangement method is as follows:

[0050] Step 11, calculate the center coordinates (ScrLeftX, ScrLeftY) of the first positioning point,

[0051] ScrLeftX=MyScreenWidth*P,

[0052] ScrLeftY=MyScreenHeight*P;

[0053] Among them, MyScreenWidth indicates the length of the screen resolution, MyScreenHeight indicates the width of the screen resolution, and P indicates the shrinkage ratio of the anchor point;

[0054] When cutting and arranging the positioni...

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Abstract

The present invention provides a method used by an photoelectric interactive projection module to eliminate an optical interference out of a projection region. The method comprises the following steps: cutting and arranging positioning points at a PC terminal, and projecting the positioning points by means of a projector; acquiring an image of a projection screen by means of a module camera; acquiring an edge positioning point of the image, and in a cutting arrangement manner, reversing a real mapping range of the projection screen at the module camera; and eliminating an interference point according to the real mapping range. The advantages of the method are as follows: the optical interference out of the projection region can be effectively eliminated; and not only can the efficiency of processing multiple light emission sources be improved, but also occurrence of phenomena such as pen hopping and pen breaking can be reduced.

Description

technical field [0001] The invention relates to the field of photoelectric interactive projection modules, in particular to a method for eliminating light interference outside a projection area of ​​a photoelectric interactive projection module. Background technique [0002] With the rapid development of computer technology, various optoelectronic products are also produced. There are more and more whiteboard modules using the photoelectric principle. It is a module composed of a camera and a light source. The operation point is obtained by relying on the relative position of the light source in the camera imaging and mapping through the positioning program. s position. Then when there is too much external light interference, processing multiple light sources will cause problems such as low processing efficiency, and there may also be phenomenons such as jumping and breaking pens caused by misjudgment. Contents of the invention [0003] The technical problem to be solved...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/042
CPCG06F3/0425
Inventor 丁万年洪文洁陈日良王尚琨
Owner RETURNSTAR INTERACTIVE TECH GRP
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