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Method and device for visual projection calibration

A projection and visual technology, applied in the field of touch products, can solve problems such as time-consuming, labor-intensive, and prone to human errors

Active Publication Date: 2022-04-22
苏州明兆光电科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, it is necessary to provide a technical solution for visual projection calibration to solve the problems that the existing visual projection calibration method is time-consuming and labor-intensive and prone to human error

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  • Method and device for visual projection calibration

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Embodiment Construction

[0032] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.

[0033] see figure 1 , is a flowchart of a method for visual projection calibration according to an embodiment of the present invention. A method for visual projection calibration, the method comprising:

[0034] First enter step S1: acquire image information.

[0035] The image information can be imported by the user through manual shooting, or can be collected by a special image acquisition device, which is an electronic device with an image acquisition function, such as a network camera. The acquired image information includes the touch area and the display area, and is used to further find out the coordinate mapping relationship between the two areas.

[0036] Then enter step S2: identify the touch area and the display area acco...

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Abstract

The present invention provides a method and device for visual projection calibration, the method comprising: S1: acquiring image information; S2: identifying the touch area and display area, and the first reference corresponding to the touch area according to the image information point and the second reference point corresponding to the display area; S3: virtualize a number of target points on the identified display area, respectively calculate the input coordinates of each target point compared to the first reference point and the comparison between each target point The output coordinates of the second reference point; S4: Import the input coordinates and output coordinates corresponding to each target point into the preset training model to obtain the calibration parameters corresponding to the current touch area and display area; S5: According to the calibration The parameter calibrates the coordinate points on the touch area and the display area. By adopting the above solution, the automatic calibration of the coordinate points of the touch area and the display area can be realized without manual clicking, which effectively reduces the calibration error and improves the calibration accuracy.

Description

technical field [0001] The invention relates to the field of touch products, in particular to a method and device for visual projection calibration. Background technique [0002] With the development of science and technology and the progress of society, interactive projection products have been widely used. At present, in the application scenarios of interactive projection products (such as electronic whiteboards, touch walls, etc.), touch calibration must be performed manually before use to determine the reporting performance of TP (Touch Panel, touch panel) Accurately map to the corresponding projection screen (that is, the display area). The specific method is to manually click multiple marking points in the projection screen with a finger or a stylus, and record the relative points of these target points relative to the touch reference point and projection reference. The position of the point, and then use machine learning technology to find the parameter set of the sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041
CPCG06F3/0418
Inventor 蔡宗华叶映志周文国
Owner 苏州明兆光电科技有限公司
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