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A DIC-based touch positioning method and system

A touch positioning and touch film technology, applied in the field of touch coordinate positioning, can solve the problems of inconvenient realization and difficult touch film, and achieve the effects of easy operation, easy operation and easy realization.

Inactive Publication Date: 2018-10-16
GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

However, for the production step of encapsulating the X-axis nanowires and Y-axis nanowires in the PET film according to certain rules, the requirements for the production process are very high. Therefore, the current production of the touch film is difficult and difficult. Ease of implementation and other disadvantages

Method used

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  • A DIC-based touch positioning method and system
  • A DIC-based touch positioning method and system
  • A DIC-based touch positioning method and system

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specific Embodiment

[0061] Such as figure 2 Shown, a kind of touch localization method based on DIC, it specifically comprises:

[0062] S101, emitting light beams onto the surface of the touch film;

[0063] S102. Obtain the speckle pattern before and after the deformation of the touch film, wherein, as image 3 As shown, in this embodiment, a touch film with 18 rows and 27 columns is used, that is, there are 18*27 coordinate points in total, and each coordinate point is used as the center point of a sub-region, then there are 18*27 sub-regions in total. area, and the distance between each point is Δx in the X direction, and Δy in the Y direction;

[0064] S103. According to the defined correlation criterion, compare and judge each sub-area in the speckle image before the touch film deformation and each sub-area in the speckle image after the touch film deformation, so as to obtain multiple maximum correlation coefficients;

[0065] The step S103 is specifically: according to the defined rel...

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Abstract

The invention discloses a touch positioning method and system based on a DIC. The system comprises a beam emitting unit, a shooting unit and a processor. The method includes the steps that a beam is emitted to the surface of a touch film; speckle maps generated after and before deformation of the touch film are acquired; according to the acquired speckle maps generated after and before deformation of the touch film, coordinates of a touch point are calculated through a digital image correlation method. By means of the touch positioning method and system, the manufacturing difficulty of the touch film can be greatly reduced, and the advantages that implementation is easy and operation and use are convenient are also achieved. The touch positioning method and system based on the DIC can be widely applied to the touch positioning field of the touch film.

Description

technical field [0001] The invention relates to touch coordinate positioning technology, in particular to a DIC-based touch film touch positioning method and system. Background technique [0002] Explanation of technical terms: [0003] DIC: Digital Image Correlation. [0004] Touch film, also known as touch film, nano touch film, nano touch film, is a transparent film that can accurately sense the touch of human hands through the substrate. It is the core component of precise positioning devices such as touch screens. It mainly solves Accurate touch positioning problem. Usually, the touch film is mainly composed of PET film, nanowires, control circuit board and driver software, and in the process of making the touch film, the X-axis nanowires and Y-axis nanowires need to be connected according to certain rules. Encapsulated in PET film to form a sensing matrix, so as to sense touch actions in different directions. However, for the production step of encapsulating the X-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/0354
CPCG06F3/03547
Inventor 王文韬任灿王慰
Owner GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
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