NDLI: A generic method for determining the up/down orientation of text in Roman and non-Roman scripts

Content Provider	IEEE Xplore Digital Library
Author	Aradhye, H.B.
Copyright Year	2005
Description	Author affiliation: SRI Int., Menlo Park, CA, USA (Aradhye, H.B.)
Abstract	This paper presents a method for determining the up/down orientation of text in a scanned document of unknown orientation. The method analyzes the "open" portions of text blobs to determine the direction in which the open portions face. By determining the respective densities of blobs opening in a pair of opposite directions (e.g., right or left), the method can establish the direction in which the text as a whole is oriented. We first discuss the orientation of Roman text based on the asymmetry in the openness of Roman letters in the horizontal direction. For non-Roman text such as Pashto and Hebrew, we determine a direction that is the most asymmetric, and therefore the most useful for orientation, given a training dataset. This direction is then used for orientation. This work can be used for automated orientation of mail, checks in ATM envelopes, and scanned, copied, or faxed documents.
Starting Page	187
Ending Page	191
File Size	313192
Page Count	5
File Format	PDF
ISBN	0769524206
ISSN	15205263
DOI	10.1109/ICDAR.2005.13
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-08-31
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Postal services Optical character recognition software Character recognition Frequency Facsimile Real time systems Automation Text recognition Ink Watermarking
Content Type	Text
Resource Type	Article

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