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Information identification method and equipment

An information recognition and handwriting technology, applied in the computer field, can solve problems such as affecting user experience and inaccurate graphic recognition, and achieve the effects of fast recognition speed, improved user experience, and high recognition rate.

Active Publication Date: 2022-03-22
HISENSE COMML DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides an information identification method and device to solve the problem in the prior art that the identification of graphics is not accurate and affects the user experience

Method used

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  • Information identification method and equipment
  • Information identification method and equipment
  • Information identification method and equipment

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0092] Example 1. Determine whether it is a straight line. This can be achieved by following steps:

[0093] Step c1, if the distance is greater than or equal to the preset line segment length threshold, according to the coordinates of each of the touch points, a linear function is obtained by least square method.

[0094] Step c2. Calculate the target distances from each of the touch points to the straight line corresponding to the linear function. If each target distance is within the first preset distance threshold range, then determine that the handwriting is a straight line.

[0095] In the present embodiment, obtain the distance between the first and last two points (i.e. the first distance), if the distance is less than the specified minimum length of the line segment, then it is not a straight line; according to the method of least squares, the regression line equation is obtained, and the formula is as follows:

[0096]

[0097] Obtain the straight line equation: ...

example 2

[0098] Example 2. Determine whether it is an arrow. First, the detection of inflection points can be realized through the following steps:

[0099] Step d1. For each of the touch points, connect at least two adjacent touch points with a line, and calculate a first included angle between each adjacent two line segments.

[0100] Step d2, if the first included angle is greater than the first angle, determine that there is an inflection point in the handwriting.

[0101] In this embodiment, for ease of understanding, the initial touch point p in the point set can be 1 At first, the touch sequence of each touch point in the touch operation is used as the mark of each touch point.

[0102] Specifically, (11), with p 1 as the starting point, and p 2 connect the points in a straight line l 1 . with p 2 as the starting point, and p 3 connect the points with a straight line l 2 , to determine the angle between two straight lines.

[0103] (12), if the included angle is less tha...

example 3

[0108] Example 3. Determine whether it is a circle. First, determine whether the handwriting is a closed figure through the following steps:

[0109] If the first distance between the initial touch point and the final touch point is less than a preset second line segment length threshold, it is determined that the handwriting is a closed figure; wherein, the preset second line segment length threshold is less than The preset first segment length threshold.

[0110] If the handwriting is a closed figure, you can check whether it is a circle through the following steps:

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Abstract

An embodiment of the present application provides an information identification method and device, the method including: in response to an input touch event, acquiring a point set corresponding to the input touch event, the input touch event is used to represent the Touch operation on the whiteboard; according to the set of points, it is judged whether the handwriting formed by the set of points is a target figure, and the target figure is a figure of any one of a plurality of preset categories of figures; if the If the handwriting is the target graphic, then control the conversion of the handwriting into the target graphic. The present application can solve the problem in the prior art that recognition of graphics is not accurate and affects user experience.

Description

technical field [0001] The embodiments of the present application relate to the field of computer technology, and in particular, to an information identification method and device. Background technique [0002] With the continuous development of computer and electronic science and technology, the writing scene has migrated from the traditional paper and pen to the touch screen, and various forms of electronic whiteboards can be seen on various touch devices. The application of the electronic whiteboard saves paper and pen resources while retaining the original handwriting of traditional paper and pen writing. [0003] Commonly used electronic whiteboards have basic functions such as writing, erasing, selecting, moving, and zooming. The touch screen transmits real-time touch data to the operating system, and the operating system processes the raw data and converts it into touch events. The electronic whiteboard can obtain touch data by responding to touch events, and then d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/04883G06T11/80
CPCG06F3/04883G06T11/80
Inventor 娄建生王兆恩杨飞利刘杰
Owner HISENSE COMML DISPLAY CO LTD
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