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Handwriting curve generation method and apparatus used for touch screen, device and storage medium

A curve generation, touch screen technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., to achieve the effect of smooth handwriting curves

Inactive Publication Date: 2018-01-19
GUANGZHOU SHIYUAN ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method, device, device, and storage medium for generating handwriting curves for touch screens, which solve the problem of broken lines when using Bezier curves to draw handwriting curves, and make the drawn handwriting curves smoother

Method used

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  • Handwriting curve generation method and apparatus used for touch screen, device and storage medium
  • Handwriting curve generation method and apparatus used for touch screen, device and storage medium
  • Handwriting curve generation method and apparatus used for touch screen, device and storage medium

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Embodiment 1

[0031] Figure 1a It is a flow chart of a method for generating handwriting curves for touch screens provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of using Bezier to generate handwriting curves. This method can be provided by the embodiment of the present invention A handwriting curve generating device for a touch screen can be implemented, and the device can be implemented in the form of software and / or hardware. refer to Figure 1a , the method may specifically include the following steps:

[0032] S110. Acquire touch data of each touch point in the user's touch operation.

[0033] Specifically, when the user performs a touch operation on the smart device, the touch data of each touch point in the user's touch operation is acquired. Exemplarily, the user's touch operation may be generated by touching the touch screen with the user's fingers, or by operating the touch screen with a stylus, wherein the touch screen may be a ...

Embodiment 2

[0045] Figure 2aIt is a flow chart of a method for generating handwriting curves for touch screens provided by Embodiment 2 of the present invention. On the basis of the above embodiments, this embodiment optimizes the set prediction rules to apply the Kalman filter for prediction , and optimize the "predict the distance between adjacent touch points according to the set prediction rules, so as to obtain the predicted distance between the adjacent touch points". refer to Figure 2a , the method may specifically include the following steps:

[0046] S210. Acquire touch data of each touch point in the user's touch operation.

[0047] S220. Calculate an actual distance between adjacent touch points according to the touch data.

[0048] Specifically, the actual distance between adjacent touch points is calculated according to the touch data. In a specific example, taking the collection of 10 touch points in the touch operation as an example, Figure 2b It shows the relative ...

Embodiment 3

[0057] Figure 3a It is a flow chart of a method for generating handwriting curves for touch screens provided by Embodiment 3 of the present invention. On the basis of the above embodiments, this embodiment provides a method for "when the predicted distance and the adjacent touch point When the actual distance between them satisfies the set distance condition, then the touch point corresponding to the predicted distance is determined as the control point" and optimized. refer to Figure 3a , the method may specifically include the following steps:

[0058] S310. Acquire touch data of each touch point in the user's touch operation.

[0059] S320. Predict the distance between adjacent touch points according to the set prediction rule, so as to obtain the predicted distance between the adjacent touch points.

[0060] S330. When the difference between the actual distance between the adjacent touch points and the corresponding predicted distance satisfies a set distance conditio...

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Abstract

Embodiments of the invention disclose a handwriting curve generation method and apparatus used for a touch screen, a device and a storage medium. The method comprises the steps of obtaining touch dataof each touch point in touch operation of a user; according to a set prediction rule, predicting a distance between the adjacent touch points to obtain a predicted distance between each adjacent touch points; when the predicted distance and an actual distance between the adjacent touch points meet a set distance condition, determining the touch point corresponding to the predicted distance as a control point; and generating a handwriting curve based on the control point according to a set Bezier curve. The problem of fold lines generated by drawing the handwriting curve by utilizing the Bezier curve is solved, so that the drawn handwriting curve is smoother.

Description

technical field [0001] The present invention relates to touch technology, in particular to a handwriting curve generation method, device, equipment and storage medium for a touch screen. Background technique [0002] In some existing drawing software or drawing tools, a Bezier formula algorithm is usually used to generate a Bezier curve based on control points. [0003] In the existing intelligent interactive panel, the touch data point is usually used as the control point to draw the Bezier curve. When the touch device generates abnormal touch data due to low sampling rate or noise interference. If the data points of abnormal touch data are used as control points to draw a Bezier curve, it will cause a broken line phenomenon. Contents of the invention [0004] Embodiments of the present invention provide a method, device, device and storage medium for generating handwriting curves for touch screens, which solve the problem of broken lines when drawing handwriting curves...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/0488
CPCG06F3/0488
Inventor 向淘
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD