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Object detecting method and correcting device used for optical touch system

A detection method and object technology, applied in the input/output process of data processing, instruments, electrical and digital data processing, etc., can solve the problems affecting the operation of the optical touch system, misjudgment, identification and judgment, etc., to improve the identification rate and The effect of operational efficiency

Inactive Publication Date: 2015-09-16
PIXART IMAGING INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when the optical touch system cannot effectively judge whether an object is touching the surface based on image recognition (for example, when the object is suspended on the touch surface, it is easy to cause misjudgment and cause false actions, thereby affecting the operation of the optical touch system )

Method used

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  • Object detecting method and correcting device used for optical touch system
  • Object detecting method and correcting device used for optical touch system
  • Object detecting method and correcting device used for optical touch system

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Embodiment Construction

[0082] Hereinafter, the present invention will be described in detail by explaining various exemplary embodiments of the present invention through the accompanying drawings. However, the concept of the present invention can be embodied in many different forms, and should not be construed as being limited to the exemplary embodiments set forth herein. In addition, the same reference numbers may be used to indicate similar elements in the drawings.

[0083] [Embodiments of Optical Touch System]

[0084] Please refer to figure 1 , figure 1 A schematic diagram of the system architecture of the optical touch system provided by an embodiment of the present invention is shown. The optical touch system 1 is used for sensing the touch position of at least one pointer. The indicator may be a touch object such as a finger 21 of the user 2, a stylus, or a touch stick, but the invention is not limited to this.

[0085] The optical touch system 1 includes a touch panel 11, an image sensor 12, a...

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Abstract

The invention provides an object detecting method and a correcting device used for an optical touch system. The method includes the steps that a touch value lookup table is stored and preset, wherein records of the preset touch value lookup table correspond to multiple preset touch values of multiple object image forming positions in images extracted by a first image sensor; the first images are extracted, wherein the first images include at least one object image corresponding to an indicator; a first brightness curve corresponding to the first images is generated; in the first brightness curve, a first left border and a right border of the corresponding object image are defined to define a first detection region; at least one preset touch value of the imaging position of the corresponding object image is obtained; at least one brightness value in the first detection region in the first brightness curve is compared with the at least one preset touch value. The recognition rate of touch points in the optical touch system can be effectively increased.

Description

Technical field [0001] The invention relates to an optical touch system, and in particular to an object detection method of the optical touch system and a correction device for the optical touch system. Background technique [0002] With the development of touch technology, the touch panel is gradually integrated with the display device to form a touch screen for users to directly perform input operations through touch. The optical touch system has been widely used in various medium and large electronic displays due to its advantages such as high accuracy, good reliability, low damage rate, support for multi-touch, fast response speed and not being affected by panel manufacturing technology. Products such as tourist guide systems or industrial control systems. [0003] The current optical touch system includes at least one image sensor and a plurality of light emitting diodes, such as infrared light emitting diodes (IR LEDs). To put it simply, when the optical touch system is ope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/042
Inventor 林育佳林传清林雨昕程瀚平苏宗敏林志新郑信基林俊生黄郁湘陈冠旭吕俊毅
Owner PIXART IMAGING INC
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