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An integrated method for ancient Chinese tablet images de-noising based on assemble of multiple image smoothing filters

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Abstract

There are unavoidably lots of noises in tablet images due to natural or man-made decay, which have a significant affect on learning and studying of the ancient Chinese calligraphy works with Chinese tablet images. To address this problem, an integrated de-noising method, based on assemble of multiple image smoothing filters, is proposed in this paper. To avoid damaging characters and losing detail information, input Chinese tablet images are enhanced by the Guided filter and multi-scale Retinex filter firstly. Then the enhanced tablet images are converted to binary ones by the Otsu thresholding filter. Finally, most random and block noises are removed using an improved scan-length statistics filter based on connected region. The performance of the proposed method was validated on our Chinese tablet image data set, which consists of 200 Chinese tablet images with different kinds of noise. Experiments show that, the proposed method can effectively remove most image noise (including various block noise, linear noise and ant-like noise) and preserve characters better than existing methods.

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Acknowledgments

This work is partially supported by a grant from the National Natural Science Foundation of China (No. 61202198 and No.61401355), Social Science Foundation of Zhejiang Province, China (No.11JCWH13YB), Nature Science Foundation of Shanxi Education Department (No.2013JK1136). The authors also gratefully acknowledge the helpful comments and suggestions of the reviewers.

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Authors and Affiliations

  1. School of Computer Science and Engineering, Xi’an University of Technology, Xi’an, Shaanxi, 710048, China

    Zhenghao Shi, Binxin Xu & Minghua Zhao

  2. Department of Culture Heritage and Museology, Zhejiang University, Hangzhou, Zhejiang, 310028, China

    Xia Zheng

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  1. Zhenghao Shi
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  2. Binxin Xu
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  3. Xia Zheng
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  4. Minghua Zhao
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Correspondence to Xia Zheng.

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Shi, Z., Xu, B., Zheng, X. et al. An integrated method for ancient Chinese tablet images de-noising based on assemble of multiple image smoothing filters. Multimed Tools Appl 75, 12245–12261 (2016). https://doi.org/10.1007/s11042-016-3421-3

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  • DOI: https://doi.org/10.1007/s11042-016-3421-3

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