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Virtual touch system, image recognition and positioning method, and computer-readable storage medium

A virtual touch and image recognition technology, applied in the field of human-computer interaction, can solve the problems of inconvenient use, high cost, cumbersome initial setting of the virtual touch system, etc., and achieve the effect of avoiding the screen from being blocked by the human body and reducing the cost

Active Publication Date: 2020-11-13
ANHUI UNIVERSITY
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AI Technical Summary

Problems solved by technology

[0005] The initial setup of the virtual touch system described above is tedious
In addition, the touch function is integrated in the computer system itself, which requires specific software installed in the computer system to perform touch. At the same time, the cost increases with the increase of the screen size, the versatility is poor, and it is inconvenient to use.

Method used

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  • Virtual touch system, image recognition and positioning method, and computer-readable storage medium
  • Virtual touch system, image recognition and positioning method, and computer-readable storage medium
  • Virtual touch system, image recognition and positioning method, and computer-readable storage medium

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Embodiment Construction

[0043] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0044] Figure 1 to Figure 7 Some embodiments according to the invention are shown.

[0045] combined reference Figure 1a and figure 2 , USB-HID mode virtual touch system based on embedded technology, as a peripheral component of computer system, including microcontroller, image acquisition device, image recognition positioning program module, and USB-HID description module.

[0046] Wherein, the computer system includes a display device and a host, and the display device can be a projection screen, a liquid crystal display, a rear projection or a common wall. The microcontroller is used to control the image acquisition device to acquire images, and to calculate th...

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Abstract

The invention discloses a virtual touch system, an image recognition and positioning method, and a computer-readable storage medium. The virtual touch system includes: an image acquisition device including two camera points for constructing a virtual touch screen in front of a display screen / screen; a micro The controller is used to control the two camera points to collect images at the same time, and execute the image recognition positioning program module to process the collected images to obtain the position coordinates of the touch point; and the USB-HID description program module, in the micro It is executed on the controller, and is used for encapsulating the touch position coordinates with the HID report descriptor, and sending it to the computer associated with the display screen / screen. The invention utilizes a micro-controller to package the touch function, is independent of the computer system, can realize the touch function of the display device of any size, erects and uses it immediately, does not need to refit the display device, and initializes and sets the boundary, which has strong versatility.

Description

technical field [0001] The invention relates to the field of human-computer interaction, in particular to a USB-HID mode virtual touch system based on embedded technology and an image recognition and positioning method for the virtual touch system. Background technique [0002] Compared with traditional input methods such as mouse and keyboard, touch is simpler and more convenient, and has become a new way of human-computer interaction. It uses the touch of fingers and other objects on the screen surface to control the computer. Common touch screens include infrared type, resistive type, surface acoustic wave type, capacitive type, etc. These types of touch screens are directly related to the size of the screen. After the finished product is formed, it will not be able to adapt to the change of screen size. [0003] Chinese patent document CN101364159A discloses a virtual touch system based on image recognition, which is composed of two one-dimensional image acquisition devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/00G06F3/01G06F3/0487
CPCG06F3/005G06F3/017G06F3/0487
Inventor 宋杰徐宇飞李炜
Owner ANHUI UNIVERSITY
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