arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1301.2628cs.CVcs.IRcs.LG
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自然场景图像中的鲁棒文本检测

Robust Text Detection in Natural Scene Images

University of Science and Technology Beijing(北京科技大学);Xi’an Jiaotong-Liverpool University(西交利物浦大学);Institute of Automation, Chinese Academy of Sciences(中国科学院自动化研究所)

Xu-Cheng Yin, Xuwang Yin, Kaizhu Huang, Hong-Wei Hao

摘要:

自然场景图像中的文本检测是许多基于内容的图像分析任务的重要前提。在本文中,我们提出了一个准确的和强大的方法来检测自然场景图像中的文本。设计了一种快速有效的剪枝算法,利用正则化变异最小化的策略提取最大稳定极值区域(MSER)作为候选字符。该算法通过一种新的自训练距离度量学习算法自动学习聚类算法的距离权值和阈值。该方法首先利用字符分类器估计候选文本对应于非文本的后验概率,然后剔除概率高的候选文本,最后利用文本分类器进行文本识别。在ICDAR 2011 Robust Reading Competition数据集上对所提出的系统进行了评估; f测度超过76%,明显优于最先进的71%的性能。在一个公开的多语言数据集上的实验结果也表明,我们提出的方法可以优于其他竞争性方法,f测度增加了9%以上。最后,我们在http://kems.ustb.edu.cn/learning/yin/dtext上设置了我们提出的场景文本检测系统的在线演示。

英文摘要:

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 ingle-link clustering algorithm, where distance weights and threshold of the clustering algorithm 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 an character classifier; text candidates with high probabilities are then eliminated and finally texts are identified with a text classifier. The proposed system is evaluated on the ICDAR 2011 Robust Reading Competition dataset; the f measure is over 76% and is significantly better than the state-of-the-art performance of 71%. Experimental results on a publicly available multilingual dataset also show that our proposed method can outperform the other competitive method with the f measure increase of over 9 percent. Finally, we have setup an online demo of our proposed scene text detection system at http://kems.ustb.edu.cn/learning/yin/dtext.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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