Error evaluation and applicability of OCR systems

Authors:
Ventzislav Alexandrov
Affiliations:
Institute of Computer and Communication Systems, Bulgarian Academy of Sciences
Venue:
CompSysTech '03 Proceedings of the 4th international conference conference on Computer systems and technologies: e-Learning
Year:
2003

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Abstract

Using an OCR for volume document conversion, obligatory require a preliminary evaluation of its performance. This paper investigates the main recognition errors in document reading systems and the causes for their generation. Metrics for estimation of recognition rate are presented. Proposed is a methodology for error evaluation, especially for documents of large volume. An evaluation of human intervention for correction of the system output is given. Special attention is paid to the applicability of the results and it is shown that not all applications require a near zero error rate.