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Multi-touch tracking method based on machine vision

A multi-touch and machine vision technology, applied in the input/output process of instruments, data processing, electrical digital data processing, etc., can solve problems such as error correlation, achieve high real-time performance, improve search speed, and reduce computational complexity Effect

Active Publication Date: 2011-05-25
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can correctly associate when the touch points are relatively far away, but if the touch points are relatively close, it is easy to cause false association

Method used

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  • Multi-touch tracking method based on machine vision
  • Multi-touch tracking method based on machine vision
  • Multi-touch tracking method based on machine vision

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Embodiment Construction

[0030] The embodiments of the present invention will be described in detail below. It should be noted that the described embodiments are intended to facilitate the understanding of the present invention, and do not limit the present invention.

[0031] Such as Figure 6 As shown, the hardware required in this embodiment is a touch screen, an infrared light source, an image acquisition device, a computer, and a projector. . The touch screen is a 67-inch ordinary rear-projection display screen for touch and display.

[0032] The infrared light source is an infrared straight-line laser source, which is used to generate an infrared light field. Due to the limited irradiation angle of this light source, four such light sources are used in this embodiment, which are placed alternately on the upper and lower sides of the projection screen to ensure that each area of ​​the touch screen is covered by infrared light. The image acquisition device is an ordinary infrared camera, which ...

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Abstract

The invention relates to the fields of image analysis, target detection and target track, and in particular relates to a multi-touch tracking method. On one hand, two optimal conditions are set in the method; the optimal condition I is that the total distance is required to reach the relative minimum after all touch points between adjacent frames are associated; and the optimal condition II is that the distance of each two associated touch points between the adjacent frames is required to be relatively consistent. In the method, the touch points meeting the two optimal conditions are searched, and then are associated, thus generating right mobile tracks. On the other hand, in the method, a direction-based search technology is fused and applied, thus accelerating the search speed and reducing the computational complexity.

Description

technical field [0001] The invention relates to the fields of image analysis, target detection and target tracking, in particular to a multi-point touch track tracking method. Background technique [0002] In recent years, with the rapid development of computer software and hardware technology, fundamental changes have taken place in human life style. The rise of artificial intelligence has eased the output of human mental and physical labor, and brought unparalleled convenience to human life. The exploration of artificial intelligence requires machines to correctly understand human thoughts and intentions, so correct interaction between humans and machines more and more important. [0003] As an effective way of communication, gestures can assist machines to understand human thoughts and intentions. At present, the wide application of virtual environment requires more natural human-computer interaction and more direct machine understanding. The control methods based on t...

Claims

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Application Information

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IPC IPC(8): G06F3/042
Inventor 骆威肖平郑金发
Owner GUANGDONG VTRON TECH CO LTD
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