A Method Of Periodic Pattern Detection On Document Images
نویسندگان
چکیده
Periodic patterns often present on document images as holograms, watermarks or guilloche elements which are mostly used for fraud protection. Automatic detection of such patterns allows the automatic document processing system to perform fraud detection, helps determine document types and lets an embedded OCR system to vary its settings depending on pattern presence. In this paper we propose a method of periodic pattern detection on document images which uses discrete Fourier transform.
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تاریخ انتشار 2015