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Automatic stroke extraction method of calligraphy words

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 accurately find intersection areas, not being able to better extract compound strokes, etc.

Active Publication Date: 2022-07-01
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 better extracted

Method used

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  • Automatic stroke extraction method of calligraphy words
  • Automatic stroke extraction method of calligraphy words
  • Automatic stroke extraction method of calligraphy words

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Embodiment Construction

[0059] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0060] A method for automatically extracting strokes of calligraphy single characters of the present invention is specifically carried out according to the following steps, such as: figure 1 shown:

[0061] Step 1: grayscale and binarize the calligraphy 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 binarized picture;

[0062] Step 1.1: Grayscale processing is as follows: Set the RGB value of any pixel in the picture as r, g, and b, respectively, then the calculation formula of the gray value of the pixel is:

[0063] gray=0.11×r+0.59×g+0.11×b;

[0064] Step 1.2: The binarization process is specifically as follows: the total number of pixels in the image is n, and the number of pixels whose pixel value is i is counted, where i is a...

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Abstract

The invention discloses a method for automatically extracting strokes of calligraphy single characters, which is specifically carried out according to the following steps. Step 1: grayscale and binarize a calligraphy single character picture, and according to the four neighborhoods of black pixels in the binarized picture The information of the pixel points is used to obtain the outline of the word; Step 2: Detect the corner points of the outline obtained in Step 1, and select the set of constraint edges and the set of constraint points to perform constrained Delaunay triangulation; Step 3: Calculate any two The minimum distance of the connecting triangles of the corner points in the above step 2, determine the intersection area and the stroke segments connected by the intersection area; Step 4: Carry out continuity analysis on the stroke segments connected by all the intersection areas in step 3, Conditional stroke segments are connected to obtain a single stroke outline, and the outline is filled, and finally the stroke extraction is completed. The present invention can more accurately find the intersection area in the stroke extraction of calligraphy single characters, and can better extract the compound strokes.

Description

technical field [0001] The invention belongs to the technical field of image processing methods and graphics, and in particular relates to an automatic stroke extraction method for calligraphy single 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, skimming, and folding. The specific subdivision can reach more than 30 kinds, and some strokes can be subdivided into more categories. Calligraphy is a handwritten form of Chinese characters, and the handwriting is divided into two ways: hard pen writing and brush writing. The deformation of the strokes of calligraphy, the adhesion between the strokes, and the change of the thickness of the strokes, etc., all...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06V10/26G06V10/44G06V30/226
CPCG06V10/26G06V10/44
Inventor 张九龙张振雄屈晓娥
Owner XIAN UNIV OF TECH
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