Sh. Han et al., DESIGN GUIDELINES FOR CHARACTER REJECTION AND SUBSTITUTION FOR OFF-LINE DOCUMENT PROCESSING SYSTEMS, International journal of industrial ergonomics, 18(2-3), 1996, pp. 161-171
Most optical character recognition systems are not error-free. Thus, s
ome characters are rejected or substituted when an off-line document i
s processed. Alternatives of a rejected character can be provided to h
elp a human user to select the correct one while proofreading the proc
essed document. This study investigated several ways of presenting alt
ernatives for rejected characters and the user strategy of proofreadin
g documents with rejected and substituted characters. Design factors e
xamined included rejection and substitution rates, number of alternati
ves, and the availability of the original document for proofreading. P
roofreading speed and accuracy were measured. The results were analyze
d statistically and analytically to come up with human factors design
guidelines. Detailed design strategies and recommendations were sugges
ted based upon the results.