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Two-point touch track correcting Method and two-point touch track correcting device on basis of movement identification

A touch trajectory and motion recognition technology, applied in the field of human-computer interaction, can solve problems such as cost does not meet the requirements of interests, complex methods, etc., to achieve a good touch experience and improve the effect of accuracy

Inactive Publication Date: 2013-08-14
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first and second options are more complicated to replace existing products with hardware to obtain multiple points, and it is not in line with the benefit requirements in terms of cost

Method used

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  • Two-point touch track correcting Method and two-point touch track correcting device on basis of movement identification
  • Two-point touch track correcting Method and two-point touch track correcting device on basis of movement identification
  • Two-point touch track correcting Method and two-point touch track correcting device on basis of movement identification

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] figure 1 is the schematic diagram of ghost point generation; figure 1 As shown, during the multi-touch movement, due to light occlusion, the system will obtain the coordinates of the real point and the industry collectively referred to as "ghost point", and will not be able to accurately capture the real coordinates of the touch point, thereby realizing multi-touch The effect is poor. For the image rotation operation on the system that supports multi-point operation, the image rotation direction is opposite to the touch rotation direction, and the error rate of the same rotation direction can reach more than 50%. If both hands draw lines at the same time, the lines will appear broken. Lines, jumpers, etc. The preferred method in the industry is to calcula...

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PUM

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Abstract

The invention discloses a two-point touch track correcting method and a two-point touch track correcting device on the basis of movement identification. The two-point touch track correcting method includes acquiring coordinates and the velocity direction of a current available node of a touch point moving track; judging whether an included angle between the velocity direction of the available node and each direction side which is defined as a straight line between the available node and a corresponding next candidate touch point of the moving track is smaller than a threshold value R or not; and selecting the candidate touch point corresponding to the direction side with the smallest included angle from the direction sides with the included angles smaller than the threshold value R as a next available node of the moving track. The two-point touch track correcting method and the two-point touch track correcting device have the advantages that virtual multi-point algorithms and devices can be improved by the scheme for recording velocity directions of the touch track and selecting the optimal candidate touch point, the accuracy of the traditional multi-point touch operation is improved, and accordingly good touch experience is realized for uses of traditional infrared touch screens.

Description

technical field [0001] The invention relates to human-computer interaction technology, in particular to a method and device for correcting two-point touch tracks for motion recognition. Background technique [0002] Because infrared touch screen technology has the advantages of being suitable for large-screen display equipment, small size, strong stability, high light resistance, and low cost, it occupies a major market in large-screen touch technology. Ordinary infrared touch screens emit infrared light from the side to For the edge sensor, judge whether to touch by scanning the light occlusion of the sensor, such as figure 1 As shown, during the multi-touch movement, due to light occlusion, the system will obtain the coordinates of the real point and the industry collectively referred to as "ghost point", and will not be able to accurately capture the real coordinates of the touch point, thereby realizing multi-touch The effect is poor. For the image rotation operation on...

Claims

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Application Information

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IPC IPC(8): G06F3/042
Inventor 廖天素陈先志
Owner GUANGDONG VTRON TECH CO LTD
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