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README.md

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+# CASIA Online Chinese Handwriting Databases
+
+Source: https://nlpr.ia.ac.cn/databases/handwriting/Online_database.html
+
+OLHWDB1.0 includes 3,866 Chinese characters and 171 alphanumeric and symbols. Among the 3,866 Chinese characters, 3,740 characters are in the GB2312-80 level-1 set (which contains 3,755 characters in total).
+OLHWDB1.1 includes 3,755 GB2312-80 level-1 Chinese characters and 171 alphanumeric and symbols.
+OLHWDB1.2 includes 3,319 Chinese characters and 171 alphanumeric and symbols. The set of Chinese characters in OLHWDB1.2 (3,319 classes) is a disjoint set of OLHWDB1.0.
+OLHWDB1.0 and OLHWDB1.2 together include 7185 Chinese characters (7,185=3,866+3,319),which include all of 6763 Chinese characters in GB2312.
+
+## Condition of Use and Application Form
+The online and offline Chinese handwriting databases, built by the CASIA, are released for academic research free of cost under an agreement.
+
+From 2020, application form is not required for downloading the datasets fro acedemic research. All data can be downloaded at the page Data Download.
+
+Commercial use of the databases is subject to charge. For possible license of commercial use, please contact Cheng-Lin Liu. The database of commercial use is enlarged to contain the data of 1,220 writers and made detailed annotations for all the text pages.
+
+Conditions of Academic Use
+All samples in the databases under this agreement can only be used by the group of the named applicant and can only be used for research purpose. No samples can be used for any commercial purpose.
+The Institute of Automation of CAS retains the copyright of all sample data in the databases.
+Publications of research results on the database should be appropriately acknowledged. The recommended reference is below:
+C.-L. Liu, F. Yin, D.-H. Wang, Q.-F. Wang, CASIA online and offline Chinese handwriting databases, Proc. 11th International Conference on Document Analysis and Recognition (ICDAR), Beijing, China, 2011, pp.37-41.