Sector Projection Fourier Descriptor for Chinese Character Recognition
Li Dong; Jian Wang; Yuanman Li; Yuan Yan Tang
Conference Name2013 IEEE International Conference on Cybernetics (CYBCO)
Source Publication2013 IEEE International Conference on Cybernetics, CYBCONF 2013
Conference Date13-15 June 2013
Conference PlaceLausanne, Switzerland
PublisherIEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA

Rotation, scale and translation invariant (RST-invariant) feature extraction methods play a critical role in optical Chinese character recognition. However, vast majority of them either has a strict constraint of input image, or has a poor performance on discriminating similar Chinese characters. In this paper, a novel method called Sector Projection Fourier Descriptor (SP-FD) is proposed. SP-FD is a region-based Fourier descriptor which contains two stages. Firstly, the input character image is transformed into polar space through sector-projection, which generates a periodic function named sector-projection shape signature. Secondly, feature vector is obtained through 1-D Fourier transformation on the shape signature. In our method, the input image does not require to be normalized as a precondition, and the shape information of original character is not assumed to be available neither. Moreover, the internal structure of character in the circular direction is exploited. The experimental results show the proposed method can extract the RST-invariant feature effectively, and outperforms the typical algorithms on discriminating similar Chinese characters.

KeywordChinese Character Recognition Feature Extraction Rotation-scale-translation Invariance Sector Projection Fourier Descriptor
URLView the original
Indexed BySCI
WOS Research AreaComputer Science
WOS SubjectComputer Science, Cybernetics
WOS IDWOS:000340924600028
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionUniversity of Macau
AffiliationDepartment of Computer and Information Science, University of Macau 999078, Macau, China
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Li Dong,Jian Wang,Yuanman Li,et al. Sector Projection Fourier Descriptor for Chinese Character Recognition[C]:IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA,2013:162-167.
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