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Recursively perform OCR on images, output searchable PDFs
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| # UPDATE: new version is a one-liner, using GNU parallel. | |
| # | |
| # For each image in img/, create a searchable PDF in pdf/. | |
| # | |
| # Requires tesseract and GNU parallel. | |
| # | |
| # Note: the CPU used had 12 cores; | |
| # specifying -j 4 runs 4 parallel processes; | |
| # not specifying -j would result in using all cores, which was very slow; | |
| # it may be possible to use between 4 and 12 cores, needs testing. | |
| mkdir pdf | |
| find img/ -type f -name 'page_*jpg' | parallel -j 4 --verbose 'tesseract {} pdf/{/.} pdf' |
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