Publication details

From Bitmaps back to Brains: DML-CZ and EuDML Projects (invited talk 8.11.2010, University of Birmingham AI Seminar, UK)



Year of publication 2010
MU Faculty or unit

Faculty of Informatics

Description Several innovative document transformations and tools developed in the process of building the Digital Mathematical Library DML-CZ are described. The main result is our new PDF re-compression tool, developed using a enhanced jbig2enc library. Together with 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.
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