Normalizing method and system of hand drawing geometric figures

A geometric figure, hand-painted technology, applied in image data processing, 2D image generation, instruments, etc., can solve the problem that hand-painted figure recognition cannot meet the needs of classroom teaching, and achieve the goal of improving redrawing accuracy, improving efficiency, and eliminating interference. Effect

Active Publication Date: 2016-06-29
HUAZHONG NORMAL UNIV
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Problems solved by technology

[0003] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method and system for standardizing hand-drawn geometric figures, the purpose of which is to effectively improve

Method used

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  • Normalizing method and system of hand drawing geometric figures
  • Normalizing method and system of hand drawing geometric figures
  • Normalizing method and system of hand drawing geometric figures

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Embodiment Construction

[0052] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0053] The plane geometric figures in the present invention refer to lines, circles, ellipses, rectangles, triangles, rhombuses, trapezoids, and pentagrams.

[0054] See this invention figure 2 , the method process of the present invention is specifically as follows:

[0055] (1) Collect handwriting parameters.

[0056] The track information of the mouse is collected during the period from w...

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Abstract

The invention provides a normalizing method of hand drawing geometric figures. The method comprises following steps of (1) collecting drawing track information between a drawing start point and a terminal point on a screen; (2) extracting geometric feature parameters of drawn tracks; (3) according to the geometric feature parameters of the drawn tracks, calculating eight feature values used for classification, comparing the eight feature values with feature ratio value regions corresponding to all kinds of geometric figure types, and according to comparison results, judging the geometric figure type of the drawn tracks; (4) extracting feature points and feature parameters on the drawn track in the determined geometric figure type according to features of different figures, and fishing drawing; and (5) using the feature points as hot points for future figure correction of users. The invention also provides a method for achieving the above method. According to the invention, while users can still personally draw geometric figures, re-drawing accuracy of the geometric figures is effectively improved; and a problem of a failure to meet classroom teaching requirements of hand drawing figures caused by inaccuracy of the hand drawing figures in classroom teaching is solved.

Description

technical field [0001] The invention belongs to the technical field of graphics, and more specifically relates to a method and system for standardizing hand-drawn geometric figures. Background technique [0002] The technical application of the normalization of hand-drawn geometric figures is very extensive, such as in the field of auxiliary teaching. In the classroom where the electronic whiteboard is used as the teaching medium, the teacher's use of hand-painted plane geometric figures cannot fully meet the teaching needs, and the use of professional drawing software has cumbersome steps and cannot adapt to the classroom rhythm. The standardization of plane geometric hand-drawn graphics is necessary and urgent in the teaching field. However, the accuracy and efficiency of plane geometric hand-drawn graphics recognition are still difficult to meet the classroom application, and there is also a lack of accurate and effective drawing methods. Contents of the invention [0...

Claims

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Application Information

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IPC IPC(8): G06T11/20G06K9/00G09B23/04
CPCG06T11/203G09B23/04G06V30/32
Inventor 何秀玲陈增照刘三女牙杨宗凯李洋洋
Owner HUAZHONG NORMAL UNIV
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