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Virtual touch screen system based on image recognition

A technology of virtual touch and image recognition, which is applied in the field of human-computer interaction, can solve problems such as unrecognizable fingers, and achieve the effect of good versatility, low price and easy implementation

Inactive Publication Date: 2009-02-11
HEFEI JITIAN ELECTRONICS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a virtual touch screen system based on image recognition in order to avoid the disadvantages of the above-mentioned prior art. The three-dimensional image acquisition device realizes the touch function of ordinary touch screen, so that any ordinary display screen has the function of touch screen

Method used

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  • Virtual touch screen system based on image recognition

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Embodiment 1

[0027] Embodiment 1: In this embodiment, a one-dimensional image acquisition device is used.

[0028] Referring to Fig. 1, two image acquisition devices 2 are set above the virtual touch screen 3, the image acquisition device 2 in the present embodiment adopts a one-dimensional image acquisition device, and the one-dimensional image place obtained by the one-dimensional image acquisition device is on the same surface as the virtual touch screen On the same plane, the axis of each one-dimensional image acquisition device is 0 to the horizontal direction 0 to 90 0 The angle between the two axes, the angle between the two axes is 0 0 to 180 0 between, take close to 90 0 better.

[0029] see Figure 2a , the virtual touch screen 3 may be on the same plane as the display screen 1, and at this time, the surface where the one-dimensional image acquired by the image acquisition device is located is on the same plane as the display screen.

[0030] see Figure 2b , the virtual to...

Embodiment 2

[0031] Embodiment 2: In this embodiment, a camera is used instead of a one-dimensional image acquisition device.

[0032] In this embodiment, the image acquisition device 2 arranged on the top of the virtual touch screen 3 is two cameras, the lenses of the cameras are perpendicular to the display screen, and the axis of each camera is 0 to the horizontal direction. 0 to 90 0 The angle between the two axes, the angle between the two axes is 0 0 to 180 0 between, take close to 90 0 better. The axis of the camera is in the plane of the virtual touch screen. Since the lens of the camera is perpendicular to the virtual touch screen, when the user performs a finger touch operation, the movement plane of the finger is perpendicular to the lens, so the trajectory of the finger on the virtual touch screen is always displayed on a certain straight line of the image captured by the camera. Therefore, the movement of the finger on the plane of the two-dimensional display screen is co...

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Abstract

The invention provides a virtual touch screen system based on image recognition, which is characterized in that the system is composed of at least two one-dimensional image acquisition devices, a display screen and a computing device, wherein the one-dimensional image acquisition devices are arranged at the periphery of the virtual touch screen; each one-dimensional image acquired by the one-dimensional image acquisition devices is positioned on the same plane as the virtual touch screen; the one-dimensional image acquisition devices convert the positions of the fingers on the virtual touch screen and the clicking motion into a plurality of points dots in the one-dimensional image and dot existence / nonexistence; and the computing device recognizes two-dimensional rectangular coordinates of the fingers in the virtual touch screen according to the dot information in the one-dimensional image, and executes the corresponding operation, thereby performing the function of human-computer interaction. The virtual touch screen system solves the problem that the fingers are screened by the human body in the touch screen utilizing the image technology, and is particularly suitable for large-screen touch systems.

Description

technical field [0001] The invention is a virtual touch screen system based on image recognition, which belongs to the field of human-computer interaction. Background technique [0002] The touch screen is the most widely accepted and promising interactive input method after the keyboard and mouse. It has a wide range of applications. At present, common touch screens mainly include infrared, resistive, surface acoustic wave, capacitive and other types. These types of large screens, especially super large screen touch screen products, all have the problems of high price, poor versatility, poor stability, and poor accuracy. On the other hand, touch screen technology facilitates people's operation and use of computers. Users only need to lightly touch the icons or text on the computer display screen with their fingers to realize the operation of the host computer, thus making the human-computer interaction more straightforward and very convenient. It is suitable for multimedia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06K9/22
Inventor 吴建国周健强李炜刘政怡吴海辉刘苏南郭星赵照
Owner HEFEI JITIAN ELECTRONICS TECH
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