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Automatic stroke extraction method for calligraphy single character

An automatic extraction and single character technology, applied in the field of image processing methods and graphics, can solve the problems of not being able to extract compound strokes well, and not being able to accurately find intersection areas, etc.

Active Publication Date: 2020-01-07
XIAN UNIV OF TECH
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Problems solved by technology

[0004] The purpose of this invention is to provide a method for automatically extracting strokes of individual calligraphy characters, which solves the problem that the current stroke extraction of individual calligraphy characters cannot accurately find the intersection area; the problem that compound strokes cannot be extracted better

Method used

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  • Automatic stroke extraction method for calligraphy single character
  • Automatic stroke extraction method for calligraphy single character
  • Automatic stroke extraction method for calligraphy single character

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Embodiment Construction

[0056] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0057] The stroke automatic extraction method of a kind of calligraphy individual character of the present invention, specifically carry out according to the following steps, as figure 1 Shown:

[0058] Step 1: Carry out grayscale and binarization processing to the calligraphic single-character picture, and obtain the outline of the single character according to the information of the four neighborhood pixels of the black pixel in the picture after binarization;

[0059] Step 1.1: The grayscale processing is specifically assuming that the RGB values ​​of any pixel in the picture are r, g, and b respectively, then the calculation formula of the gray value gray of the pixel is:

[0060] gray=0.11×r+0.59×g+0.11×b;

[0061] Step 1.2: The binarization process is specifically that the total number of pixels in the image is n, and the number of pi...

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Abstract

The invention discloses a method for automatically extracting strokes of a calligraphy single character. The method comprises the steps of 1, performing graying and binarization processing on a calligraphy single-character picture, and obtaining a contour of a single character according to information of four neighborhood pixel points of black pixel points in the picture after binarization; 2, carrying out angular point detection on the contour obtained in the step 1, selecting a constraint edge set and a constraint point set, and carrying out constraint Delaunay triangulation; 3, calculatingthe minimum distance between any two connecting triangles containing more than two corner points in the step 2, and determining a cross region and stroke sections connected with the cross region; and4, carrying out continuity analysis on the stroke segments connected with all the intersection regions in the step 3, connecting the stroke segments meeting conditions to obtain a single stroke contour, carrying out contour filling, and finally completing extraction of strokes. According to the method, the intersection area can be accurately found in the stroke extraction of the calligraphy singlecharacter; and the composite strokes can be well extracted.

Description

technical field [0001] The invention belongs to the technical fields of image processing methods and graphics, and in particular relates to a method for automatically extracting strokes of individual calligraphy characters. Background technique [0002] Hand strokes are the basic elements of Chinese characters, and stroke extraction plays an important role in the fields of Chinese character classification, font recognition, text retrieval, and automatic generation of Chinese characters. The strokes of Chinese characters can be divided into several categories: horizontal, vertical, left, right, etc., which can be subdivided into more than 30 types, and some strokes can be subdivided into more categories. Calligraphy is a form of handwriting of Chinese characters, and the writing of handwriting is divided into two ways: writing with a hard pen and writing with a brush. The deformation of strokes, the adhesion between strokes, and the change of stroke thickness in brush callig...

Claims

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Application Information

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IPC IPC(8): G06K9/34G06K9/46
CPCG06V10/26G06V10/44
Inventor 张九龙张振雄屈晓娥
Owner XIAN UNIV OF TECH
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