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Scene text detection using adaptive color reduction, adjacent character model and hybrid verification strategy

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Abstract

Text detection is a primary task for text recognition and understanding, which can be used in many image analysis techniques. In this paper, we propose an effective scene text detection method including three major steps: connected components (CCs) extraction, character-linking and text/non-text classification. First, for CCs extraction, we design an adaptive color reduction scheme by analyzing image color histogram, which reasonably selects color centers and generates unfixed number of color layers for images in different color complexities. Then, for character-linking, an adjacent character model is built by training an extreme learning machine (ELM), instead of setting various thresholds in previous approaches. Finally, a hybrid text verification strategy is adopted, combining convolutional neural network with ELM for text/non-text classification and performing better than just using one of them. Experimental results on some publicly available datasets illustrate the effectiveness of our method and comparative results with some state-of-the-art algorithms demonstrate our competitiveness.

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Acknowledgments

The authors would like to thank the anonymous reviewers for their valuable suggestions.

Author information

Authors and Affiliations

  1. School of Information Science and Engineering, Central South University, Changsha, 410083, China

    Hui Wu, Beiji Zou, Yu-qian Zhao & Jianjing Guo

  2. Mobile Health Ministry of Education, China Mobile Joint Laboratory, Changsha, 410012, Hunan, China

    Hui Wu, Beiji Zou, Yu-qian Zhao & Jianjing Guo

  3. School of Geosciences and Info-Physics, Central South University, Changsha, 410083, China

    Yu-qian Zhao

Authors
  1. Hui Wu
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  2. Beiji Zou
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  3. Yu-qian Zhao
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  4. Jianjing Guo
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Corresponding authors

Correspondence to Beiji Zou or Yu-qian Zhao.

Additional information

This work is partly supported by the National Natural Science Foundation of China (Grant Nos. 61172184, 61379107, 61402539, and 61573380), Program for New Century Excellent Talents in University of Education Ministry in China (Grant No. NCET-13-0603), Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20130162110016) and the Fundamental Research Funds for the Central Universities of Central South University (Grant No. 2015zzts052).

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Wu, H., Zou, B., Zhao, Yq. et al. Scene text detection using adaptive color reduction, adjacent character model and hybrid verification strategy. Vis Comput 33, 113–126 (2017). https://doi.org/10.1007/s00371-015-1156-1

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