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@inproceedings{900152, author = {Sojka, Petr and Hatlapatka, Radim}, address = {Znojmo, Czech Republic}, booktitle = {Proceedings of MEMICS 2010 conference}, keywords = {Authoring tools and systems; Categorization; Classification; Document presentation; Representations/Standards; Character recognition; Digital mathematical library; Digitisation workflow}, howpublished = {tištěná verze "print"}, language = {eng}, location = {Znojmo, Czech Republic}, isbn = {978-80-87342-10-7}, pages = {205-205}, publisher = {NOVPRESS s.r.o.}, title = {Document Engineering for a Digital Library: PDF recompression using JBIG2 and other optimization of PDF documents}, year = {2010} }
TY - JOUR ID - 900152 AU - Sojka, Petr - Hatlapatka, Radim PY - 2010 TI - Document Engineering for a Digital Library: PDF recompression using JBIG2 and other optimization of PDF documents PB - NOVPRESS s.r.o. CY - Znojmo, Czech Republic SN - 9788087342107 KW - Authoring tools and systems KW - Categorization KW - Classification KW - Document presentation KW - Representations/Standards KW - Character recognition KW - Digital mathematical library KW - Digitisation workflow N2 - Several innovative document transformations and tools developed in the process of building the Digital Mathematical Library DML-CZ http://dml.cz are described. The main result is our new PDF re-compression tool, developed using a enhanced jbig2enc library. Together with pdfsizeopt.py by Péter Szabó, we have managed to decrease PDF storage size and transmission needs by 62%: using both programs we reduced the size of the original already compressed PDFs to 38%. We briefly describe workflow and tools developed for creating the digital library. The batch digital signature stamper, the document similarity metrics which uses four different methods, a [meta]data validation process and math OCR tools represent some of the main [by]products. Such document engineering, together with Google Scholar indexing optimization, have led to the success of serving digitized and born-digital scientific math documents to the public in DML-CZ, and are being employed also in The European Digital Mathematics Library, EuDML. ER -
SOJKA, Petr and Radim HATLAPATKA. Document Engineering for a Digital Library: PDF recompression using JBIG2 and other optimization of PDF documents. In \textit{Proceedings of MEMICS 2010 conference}. Znojmo, Czech Republic: NOVPRESS s.r.o., 2010, p.~205. ISBN~978-80-87342-10-7.
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