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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  • Claims
  • Application Information

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Problems solved by technology

The first and second options are more complicated to replace existing products with hardware t

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

[0022] figure 1 Schematic diagram of ghost point generation; such as figure 1 As shown, during the movement of multi-touch, due to the occlusion of light, the system will obtain the coordinates of the real point and the "ghost point" collectively referred to in the industry, and will not be able to accurately capture the real coordinates of the touch point, thereby achieving multi-touch The effect of the image rotation operation on the system that supports multi-point operation is poor. The image rotation direction is opposite to the touch rotation direction. The error rate of the same rotation direction can reach more than 50%, and the lines will be broken when both hands are drawn at the same time. Phenomena such as wire and jumper. The preferred method in the i...

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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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