Handwritten Chinese/Japanese Text Recognition Using Semi-Markov Conditional Random Fields
Handwritten Chinese/Japanese Text Recognition Using Semi-Markov Conditional Random Fields
复制标题
使用半马尔可夫条件随机场的手写中文/日文文本识别
DOI:
10.1109/tpami.2013.49
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发表时间:
2013-10
影响因子:
23.6
通讯作者:
Nakagawa Masaki
中科院分区:
文献类型:
--
作者:
Zhou Xiang-Dong;Wang Da-Han;Tian Feng;Liu Cheng-Lin;Nakagawa Masaki
This paper proposes a method for handwritten Chinese/Japanese text (character string) recognition based on semi-Markov conditional random fields (semi-CRFs). The high-order semi-CRF model is defined on a lattice containing all possible segmentation-recognition hypotheses of a string to elegantly fuse the scores of candidate character recognition and the compatibilities of geometric and linguistic contexts by representing them in the feature functions. Based on given models of character recognition and compatibilities, the fusion parameters are optimized by minimizing the negative log-likelihood loss with a margin term on a training string sample set. A forward-backward lattice pruning algorithm is proposed to reduce the computation in training when trigram language models are used, and beam search techniques are investigated to accelerate the decoding speed. We evaluate the performance of the proposed method on unconstrained online handwritten text lines of three databases. On the test sets of databases CASIA-OLHWDB (Chinese) and TUAT Kondate (Japanese), the character level correct rates are 95.20 and 95.44 percent, and the accurate rates are 94.54 and 94.55 percent, respectively. On the test set (online handwritten texts) of ICDAR 2011 Chinese handwriting recognition competition, the proposed method outperforms the best system in competition.
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DOI:
10.1016/s0031-3203(02)00041-9
发表时间:
2003
期刊:
Pattern Recognit.
影响因子:
--
作者:
Shuyan Zhao;Z. Chi;P. Shi;Hong Yan
通讯作者:
Shuyan Zhao;Z. Chi;P. Shi;Hong Yan
DOI:
10.1109/dial.2006.19
发表时间:
2006-04
期刊:
Second International Conference on Document Image Analysis for Libraries (DIAL'06)
影响因子:
--
作者:
Shaolei Feng;R. Manmatha;A. McCallum
通讯作者:
Shaolei Feng;R. Manmatha;A. McCallum
DOI:
10.1109/icdar.2001.953776
发表时间:
2001-09
期刊:
Proceedings of Sixth International Conference on Document Analysis and Recognition
影响因子:
--
作者:
S. Tulyakov;V. Govindaraju
通讯作者:
S. Tulyakov;V. Govindaraju
DOI:
10.1109/icdar.2005.209
发表时间:
2005-08
期刊:
Eighth International Conference on Document Analysis and Recognition (ICDAR'05)
影响因子:
--
作者:
Xianghui Wei;Shaoping Ma;Yijiang Jin
通讯作者:
Xianghui Wei;Shaoping Ma;Yijiang Jin
DOI:
--
发表时间:
2006-10
期刊:
--
影响因子:
--
作者:
T. Do;T. Artières
通讯作者:
T. Do;T. Artières