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. 2008 Jul 9;24(17):1968–1970. doi: 10.1093/bioinformatics/btn340

Table 1.

Performance statistics for OCR results over 161 randomly selected images

High-recall mode High-precision mode
Precision 27.85% 87.68%
Recall 64.79% 38.45%
F-rate 0.390 0.535

Manual labeling determined that the images contain 2445 text strings, of which 70.84% are not found in the associated captions.