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Recognition of Off-line Handwritten Uyghur Words Using Bayesian Networks with Grapheme Nodes | |
Yamei Xu; Zhigang Xu | |
2020-09-04 | |
发表期刊 | SN Computer Science |
卷号 | 1期号:5页码:1-13 |
摘要 | This study proposes a new algorithm that constructs a word Bayesian network (BN) framework with grapheme nodes to recognize off-line handwritten Uyghur words. First, we build an Uyghur script grapheme library according to the rules and morphological structure of Uyghur. The library includes main grapheme, affix grapheme, and dot grapheme categories. Second, word images are segmented into grapheme sequences by subjecting the individual strokes to extraction, segmentation, and clustering operations. Then we design specific feature extractors and classifiers for specific graphemes to detect and identify small differences between similar words. Finally, we construct a hierarchical matching model for graphemes, conjoined segments, and words using a discrete BN. The BN infers word categories from grapheme features, calculates the confidence of inference, and integrates the grapheme recognition information and word-formation prior information to obtain the final word recognition results. A word recognition rate of 91.65% is obtained during experiments conducted with a database consisting of 12,500 samples and a total of 58 trained grapheme categories. These results indicate that the proposed algorithm not only provides a high word recognition rate by effectively avoiding character over-segmentation errors, but also employs a small and fully predictable number of training categories, which facilitates strong expansibility. |
关键词 | Computer application Text recognition Uyghur language Off-line handwritten words Bayesian network Grapheme |
学科门类 | 工学::信息与通信工程 |
DOI | https://doi.org/10.1007/s42979-020-00308-7 |
收录类别 | CNKI |
语种 | 英语 |
资助项目 | 复杂场景图像中维吾尔文字的定位与识别技术研究 |
中图分类号 | TP391.4 |
引用统计 | 无
|
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/110601 |
专题 | 计算机与通信学院 |
通讯作者 | Yamei Xu |
作者单位 | School of Computer and Communication, Lanzhou University of Technology |
第一作者单位 | 兰州理工大学 |
通讯作者单位 | 兰州理工大学 |
第一作者的第一单位 | 兰州理工大学 |
推荐引用方式 GB/T 7714 | Yamei Xu,Zhigang Xu. Recognition of Off-line Handwritten Uyghur Words Using Bayesian Networks with Grapheme Nodes[J]. SN Computer Science,2020,1(5):1-13. |
APA | Yamei Xu,&Zhigang Xu.(2020).Recognition of Off-line Handwritten Uyghur Words Using Bayesian Networks with Grapheme Nodes.SN Computer Science,1(5),1-13. |
MLA | Yamei Xu,et al."Recognition of Off-line Handwritten Uyghur Words Using Bayesian Networks with Grapheme Nodes".SN Computer Science 1.5(2020):1-13. |
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