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Joint Method of Interference Suppression and Super-Resolution for Chinese Characters Image with Interference
Jiang, Bo1; Hu, Wei1; Liang, Jian2; Zhang, Shouxu3; Ma, Xiaolei4; Zhou, Yan1; Niu, Jinping1; Chen, Xiaoxuan1
Department信息光子学研究室
2018
Source PublicationMATHEMATICAL PROBLEMS IN ENGINEERING
ISSN1024-123X;2155-3165
Contribution Rank2
Abstract

As Chinese characters image often has insufficient photography illumination, or underlines under characters, or low resolution, a joint method of interference suppression and super-resolution for Chinese characters image with interference is proposed. In the stage of interference suppression preprocessing, the technology of image layer separation is used to decompose Chinese characters image into the illumination layer and reflectance layer at first, and reflectance layer that contains the essential property of input image is retained consequently. Then the reflectance layer is decomposed into four coefficient subimages by wavelet transform, and image smoothing via L-0 gradient minimization with different scale factors is adopted to these different coefficient subimages. Subsequently, by a simple background processing and image filtering, the image preprocessing for Chinese characters image with interference is ultimately completed. In the stage of image super-resolution, due to acquisition limitation of a large number of high-resolution Chinese characters images, we adopt neighbor embedding super-resolution method for its advantage of greatly reducing the scale of training set. In the key feature vector of Chinese characters image, the weights of horizontal and vertical stroke features are strengthened; meanwhile, the other stroke features of Chinese characters are also considered. Ultimately, a super-resolution method more suitable for Chinese characters image is proposed. Experimental results show that our method of interference suppression has the superiority for Chinese characters images with aforementioned interference, and our optimized super-resolution method has better performance for test Chinese characters images than bicubic interpolation method and three classical super-resolution methods.

DOI10.1155/2018/4203121
Indexed BySCI ; EI
Language英语
WOS IDWOS:000449192300001
PublisherHINDAWI LTD
EI Accession Number20184606063135
Citation statistics
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/30723
Collection信息光子学研究室
Corresponding AuthorChen, Xiaoxuan
Affiliation1.Northwest Univ, Sch Informat Sci & Technol, Xian 710127, Shaanxi, Peoples R China
2.Chinese Acad Sci, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China
3.Northwestern Polytech Univ, Sch Marine Sci & Technol, Xian 710072, Shaanxi, Peoples R China
4.Emory Univ, Dept Phys, Atlanta, GA 30322 USA
Recommended Citation
GB/T 7714
Jiang, Bo,Hu, Wei,Liang, Jian,et al. Joint Method of Interference Suppression and Super-Resolution for Chinese Characters Image with Interference[J]. MATHEMATICAL PROBLEMS IN ENGINEERING,2018.
APA Jiang, Bo.,Hu, Wei.,Liang, Jian.,Zhang, Shouxu.,Ma, Xiaolei.,...&Chen, Xiaoxuan.(2018).Joint Method of Interference Suppression and Super-Resolution for Chinese Characters Image with Interference.MATHEMATICAL PROBLEMS IN ENGINEERING.
MLA Jiang, Bo,et al."Joint Method of Interference Suppression and Super-Resolution for Chinese Characters Image with Interference".MATHEMATICAL PROBLEMS IN ENGINEERING (2018).
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