Document image database indexing with pictorial dictionary
Mohammad Kazem Akbari, Reza Azimi · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2010
In this paper we introduce a new approach for information retrieval from Persian document image database without using Optical Character Recognition (OCR).At first an attribute called subword upper contour label is defined then, a pictorial dictionary is constructed based on this attribute for the subwords. By this approach we address two issues in document image retrieval: keyword spotting and retrieval according to the document similarities. The proposed methods have been evaluated on a Persian document image database. The results have proved the ability of this approach in document image information retrieval.