Device and method for discriminating color of touch pen of touch device

A color recognition and touch device technology, applied in the field of human-computer interaction, can solve the problems of easy deviation in color recognition and dark display color, and achieve the effects of improving image processing speed, simple operation and improving response speed.

Inactive Publication Date: 2010-11-10
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The primary purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, provide a touch pen color reco...

Method used

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  • Device and method for discriminating color of touch pen of touch device
  • Device and method for discriminating color of touch pen of touch device
  • Device and method for discriminating color of touch pen of touch device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] see figure 1 The touch pen color recognition device of the touch device of the present invention includes: two first positioning cameras 101 and a second positioning camera 102 for determining the position of the touch pen, an infrared light source 106, and a color recognition camera 103 for photographing the color of the touch pen , control unit 104 and display screen 105; Wherein, color recognition camera 103 is a wide-angle lens, and shooting angle is 110 °, and it is obliquely placed on the upper left corner or the upper right corner of the upper border of the screen, so that it can be photographed except the upper border The remaining three borders of the screen; and the positioning cameras 101, 102 are fisheye lenses, both of which have a shooting angle of 180°, and placing them horizontally on the upper border of the screen also makes it possible to photograph the other three borders except the upper border. The remaining three frames of the screen outside the sc...

Embodiment 2

[0079] The structure of the touch pen color recognition device of the touch device of this embodiment is the same as that of Embodiment 1, the difference lies in the step (2) in the workflow, and the rest of the steps are the same. Step (2) of the present embodiment adopts calculating the position of the touch pen on the touch screen to determine the imaging position of the touch pen in the image captured by the color recognition camera, such as Figure 4 As shown, it includes the following steps:

[0080] (2-1) Start the positioning camera to shoot;

[0081] (2-2) Judging whether there is a touch point (that is, whether there is a light spot) in the captured image, if not, return to step (2-1), if so, enter step (2-3);

[0082] (2-3) Calculate the touch point at the touch screen position a (x1, y1), and start the color recognition camera to shoot at the same time (that is, trigger the flash light device of the color recognition camera to flash, thereby triggering the color r...

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Abstract

The invention relates to a device and a method for discriminating the color of a touch pen of a touch device. The method mainly comprises the following steps of: determining the imaging position of the touch pen in an image shot by the color discrimination camera through an image subtraction method or by computing the position of the touch pen on a touch screen; selecting a sampling area by taking the position as a center; respectively solving the average values of R, G, B values of pixel points in the sampling area, and converting a result to an HSV (Hue Saturation Value) color space for adjustment; and converting the adjusted H, S V values back to RGB (Red-Green-Blue) formats, and outputting the RGB color values as ultimately determined colors to a display screen for display. The invention can more accurately discriminate the color of the touch pen of the touch device, effectively improves the condition that the display color is slant dark and has easy operation.

Description

technical field [0001] The invention relates to the field of human-computer interaction, in particular to a touch pen color recognition device and method for a touch device. Background technique [0002] Among the existing human-computer interaction technologies, touch technology based on camera positioning has the advantages of high accuracy, multi-touch capability, and simple maintenance. Therefore, people are increasingly favoring touch technology based on camera positioning. Based on the camera positioning touch technology, such as the Chinese invention patent application "positioning device and method for electronic display system" with application number 200910039968.4 and publication number CN101566898A, it has the characteristics of low cost and simple implementation. But usually we also need to reflect the color of the touch pen, and then display the corresponding color on the display screen, which is convenient for distinguishing the touch operation of touch pens o...

Claims

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Application Information

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IPC IPC(8): G06F3/042
Inventor 唐年华刘国平钟杰婷
Owner GUANGDONG VTRON TECH CO LTD
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