Named Entity Recognition from Unstructured Handwritten Document Images

Publisher:
IEEE
Publication Type:
Conference Proceeding
Citation:
Proceedings - 12th IAPR International Workshop on Document Analysis Systems, DAS 2016, 2016, pp. 375 - 380
Issue Date:
2016-06-10
Full metadata record
Files in This Item:
Filename Description Size
4.pdfPublished version2.49 MB
Adobe PDF
© 2016 IEEE.Named entity recognition is an important topic in the field of natural language processing, whereas in document image processing, such recognition is quite challenging without employing any linguistic knowledge. In this paper we propose an approach to detect named entities (NEs) directly from offline handwritten unstructured document images without explicit character/word recognition, and with very little aid from natural language and script rules. At the preprocessing stage, the document image is binarized, and then the text is segmented into words. The slant/skew/baseline corrections of the words are also performed. After preprocessing, the words are sent for NE recognition. We analyze the structural and positional characteristics of NEs and extract some relevant features from the word image. Then the BLSTM neural network is used for NE recognition. Our system also contains a post-processing stage to reduce the true NE rejection rate. The proposed approach produces encouraging results on both historical and modern document images, including those from an Australian archive, which are reported here for the very first time.
Please use this identifier to cite or link to this item: