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Image recognition method of converting Sanskrit Devanagari printed character to Latin

An image recognition and celestial body technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems of less research on Sanskrit character image recognition, difficulty in character recognition, etc., to achieve high accuracy, high accuracy, and improved The effect of processing efficiency

Active Publication Date: 2017-05-31
杭州佛学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Sanskrit characters are difficult to recognize due to the complexity of their text structure, so there are relatively few researches on image recognition of Sanskrit characters.

Method used

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  • Image recognition method of converting Sanskrit Devanagari printed character to Latin
  • Image recognition method of converting Sanskrit Devanagari printed character to Latin
  • Image recognition method of converting Sanskrit Devanagari printed character to Latin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as figure 2 The Sanskrit Devanagari printed character picture shown above is divided into 6 Sanskrit Devanagari printed character blocks by the above-mentioned Sanskrit Devanagari printed character block segmentation method, encoded by the Jiugongge method and Tianzige method, and the pixel value and normalization processing are obtained , respectively calculate the nine-dimensional feature vector of each character block, as shown in Table 1 below:

[0052] Table 1

[0053]

[0054] Among them, the character vector numbering method adopts figure 1 The numbering method in is used for labeling; Sanskrit Devanagari printed character blocks 1~6 and connector 7 are respectively as follows figure 2 Shown; Wherein the Sanskrit Devanagari printed character blocks 1 to 5 adopt the Jiugongge method, and the Sanskrit Devanagari printed character block 6 adopts the matt method. The numbering method of the character vector x is: Jiugongge is from left to right, from bot...

Embodiment 2

[0057] Such as image 3 The shown Sanskrit printed character picture, according to the above method, obtains 11 character blocks by character block segmentation (according to figure 2 The labeling method, starting from the bottom of the connector, from left to right are Sanskrit Devanagari printed character blocks 1~8, and then starting from above the connector, from left to right are Sanskrit Devanagari printed character blocks 9~11), through the Jiugongge Or matts calculation method obtains the nine-dimensional feature vector of each character block, as shown in table 2 below:

[0058] Table 2

[0059]

[0060]

[0061] The Latin character recognition conversion after recognition is obtained by minimum variance matching: The recognition accuracy rate is 100%.

Embodiment 3

[0063] Such as Figure 4 Shown Sanskrit printed character picture, obtains 14 character blocks (numbering is the same as embodiment 2) by character block segmentation, obtains the nine-dimensional feature vector of each character block by Jiugongge and matts calculation method, as shown in table 3 below:

[0064] table 3

[0065]

[0066] The Latin character recognition conversion after recognition is obtained by minimum variance matching: karhicit, the recognition accuracy rate is 100%.

[0067] From the verification results of Examples 1 to 3, it can be known that the conversion method of the present invention has high precision and a correct rate of 100%, and has strong practicability.

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Abstract

The invention discloses an image recognition method of converting a Sanskrit Devanagari printed character to Latin. The method comprises steps: (1) a character image containing a Sanskrit Devanagari printed character is scanned, segmentation of the Sanskrit Devanagari printed character is carried out based on the vertical maximum blank space among character blocks, and a plurality of Sanskrit Devanagari printed character blocks are obtained; (2) the obtained Sanskrit Devanagari printed character blocks are recognized to obtain feature vectors corresponding to the Sanskrit Devanagari printed character blocks; and (3) the obtained feature vectors and feature vectors of standard Latin characters are compared, and according to a comparison result, the recognized Sanskrit Devanagari printed character blocks are converted to a Latin character. Thus, direct conversion from the Sanskrit Devanagari noiseless printed character image to the corresponding Latin character can be realized, the accuracy is high and basically, 100% accuracy can be achieved. The used image recognition algorithm is convenient and easy to operate and high in efficiency. The technical scheme provided by the invention is easy to realize and is applicable to actual literature research and application.

Description

technical field [0001] The invention belongs to the field of computer character image recognition, and in particular relates to a method for recognizing Sanskrit Devanagari noiseless printed characters in Latin transliteration. Background technique [0002] Sanskrit is not only a beautiful language, but also has a detailed and complete conjugation system, which has aroused great interest of modern scientists. It is precisely because Sanskrit has perfect grammatical rules that it is very suitable for processing by computers. Utilizing the convenience brought by the current computer technology can promote our study and utilization of Sanskrit literature and accelerate the comparative study of Buddhist scriptures between Sanskrit and Chinese. As the first step in the research on computer recognition of Sanskrit Buddhist scriptures, it is necessary to realize the digitization and automatic recognition of Buddhist texts, and solve the key problem of low manual input efficiency i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/34G06K9/46G06K9/62
CPCG06V30/158G06V10/267G06V10/44G06V30/293G06F18/22
Inventor 刘松柏
Owner 杭州佛学院
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