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Scan line positioning method and system for testing capacitive touch screen

A capacitive touch screen and scanning line technology, which is applied in electrical digital data processing, input/output process of data processing, image data processing, etc., can solve the problem of large positioning error of scanning lines.

Active Publication Date: 2017-03-08
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for locating scan lines when performing capacitive touch screen testing. The method realizes accurate positioning of scan lines through image processing technology, and can solve the relatively large positioning error of scan lines in the prior art. big problem

Method used

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  • Scan line positioning method and system for testing capacitive touch screen
  • Scan line positioning method and system for testing capacitive touch screen
  • Scan line positioning method and system for testing capacitive touch screen

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Experimental program
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Embodiment 1

[0077] Such as figure 1 As shown, the system for positioning the scanning line in the capacitive touch screen test of this embodiment includes a two-dimensional workbench, a light source module, an image acquisition module and a control unit, and the two-dimensional workbench, the light source module and the image acquisition module are respectively connected with control unit connection;

[0078] The control unit is the core of the whole system, and it adopts an embedded control system, which includes an image enhancement module, an image segmentation module and a scanning line positioning module, and the image enhancement module, the image segmentation module and the scanning line positioning module constitute a The software part of the control unit realizes the scanning line positioning to the capacitive touch screen under test; The hardware part of the control unit is as follows figure 2 As shown, it includes an embedded processor, a memory, a USB interface and an Ethern...

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Abstract

The invention discloses a scan line positioning method and system for testing a capacitive touch screen. The method comprises that an image of the capacitive touch screen to be tested is obtained; the image of the capacitive touch screen to be tested is enhanced; the enhanced image of the capacitive touch screen to be tested is segmented to obtain image areas included by all scan lines; and the amount of pixels of the image area included by each scan line as well as the position of each position are counted, the length and width of each scan line are obtained, and a concrete position of each scan line in the image of the whole capacitive touch screen is obtained. The system comprises a 2D workbench, a light source module, an image obtaining module and a control unit, and a software part of the control unit includes an image enhancement module, an image segmentation module and a scan line positioning module. According to the method and system, the scan lines are positioned accurately via an image processing technology, and the problem that a positioning error of the scanning lines is relatively high in the prior art is solved.

Description

technical field [0001] The invention relates to a scanning line positioning method and system, in particular to a scanning line positioning method and system during capacitive touch screen testing, belonging to the technical field of touch screen testing. Background technique [0002] In recent years, as a very convenient input device for human-computer interaction, the touch screen has been widely used in many fields such as digital cameras, mobile phones, industrial control, and ticketing terminal systems. When using the touch screen, the human-computer interaction only needs a touch of a finger to complete the relevant buttons and information input, which can completely abandon the cumbersome input method of using the traditional keyboard, making the entire input process simple and fast. [0003] The touch screen is generally attached to the surface of the display and used in conjunction with the display. When the operator uses the touch screen, an analog electronic sign...

Claims

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Application Information

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IPC IPC(8): G06T7/11G06F3/044
Inventor 潘中良陈翎
Owner SOUTH CHINA NORMAL UNIVERSITY
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