Speed-up of optical scanner characterization subsystem

Roger D. Clements; Elisa H. Barney Smith

doi:10.1117/12.476060

13 January 2003 Speed-up of optical scanner characterization subsystem

Roger D. Clements, Elisa H. Barney Smith

Proceedings Volume 5010, Document Recognition and Retrieval X; (2003) https://doi.org/10.1117/12.476060
Event: Electronic Imaging 2003, 2003, Santa Clara, CA, United States

Abstract

Small image deformations such as those introduced by optical scanners significantly reduce the accuracy rate of optical character recognition (OCR) software. Characterization of the scanner used in the OCR process may diminish the impact on recognition rates. Theoretical methods have been developed to characterize a scanner based on the bi-level image resulting from scanning a high contrast document. Two bottlenecks in the naïve implementation of these algorithms have been identified, and techniques were developed to improve the execution time of the software. The algorithms are described and analyzed. Since approximations are used in one of the techniques, the error of the approximations is examined.

Citation Download Citation

Roger D. Clements and Elisa H. Barney Smith "Speed-up of optical scanner characterization subsystem", Proc. SPIE 5010, Document Recognition and Retrieval X, (13 January 2003); https://doi.org/10.1117/12.476060

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