Seals contain a lot of vital information about the document. Its detection is one of the important steps to gain access to these information. In the present paper, we present a correlation based technique which exploits the existence of some constant character strings and their topology for detection of seals. We also present a technique which separates the false positives from the actual seals. We achieved an accuracy of about 98% for extraction of such kind of seals. Once the seal is extracted from a page image, an OCR has been designed and employed to read the contextual information present in the seal. A knowledge based post-processing step is employed to enhance the accuracy of the recognized text strings.
Added on September 1, 2014
Product Type : Research Paper
License Type : Freeware
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Author : Farshad N, Bhavna Antony, Peeta Basa Pati, A G Ramakrishnan