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Robust Text Detection in Natural Scene Images
PrePrint
ISSN: 0162-8828
Xu-Cheng Yin, University of Science and Technology Beijing, Beijing
Xuwang Yin, University of Science and Technology Beijing, Beijing
Kaizhu Huang, Xi'an Jiaotong-Liverpool University, Suzhou
Hong-Wei Hao, Institute of Automation, Chinese Academy of Sciences, Beijing
Text detection in natural scene images is an important prerequisite for many content-based image analysis tasks. In this paper, we propose an accurate and robust method for detecting texts in natural scene images. A fast and effective pruning algorithm is designed to extract Maximally Stable Extremal Regions (MSERs) as character candidates using the strategy of minimizing regularized variations. Character candidates are grouped into text candidates by the single-link clustering algorithm, where distance weights and clustering threshold are learned automatically by a novel self-training distance metric learning algorithm. The posterior probabilities of text candidates corresponding to non-text are estimated with a character classifier; text candidates with high non-text probabilities are eliminated and texts are identified with a text classifier. The proposed system is evaluated on the ICDAR 2011 Robust Reading Competition database; the f measure is over 76%, much better than the state-of-the-art performance of 71%. Experiments on multilingual, street view, multi-orientation and even born-digital databases also demonstrate the effectiveness of the proposed method. Finally, an online demo of our proposed scene text detection system has been set up at http://kems.ustb.edu.cn/learning/yin/dtext.
Index Terms:
Computing Methodologies,Text processing,Scene Analysis,Image Processing and Computer Vision
Citation:
Xu-Cheng Yin, Xuwang Yin, Kaizhu Huang, Hong-Wei Hao, "Robust Text Detection in Natural Scene Images," IEEE Transactions on Pattern Analysis and Machine Intelligence, 27 Sept. 2013. IEEE computer Society Digital Library. IEEE Computer Society, <http://doi.ieeecomputersociety.org/10.1109/TPAMI.2013.182>
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