On Tue, Apr 6, 2021 at 2:28 PM Brian Matthews <[email protected]> wrote:
I just tried printing the key on paper. I scanned the paper with my >> Fujitsu scansnap at max resolution. Then converted the resulting PDF to >> a jpg with ImageMagick. Then OCR'd it with tesseract. No joy. OCR is >> just not good enough. > > > OCR success depends a lot on the font used to print the text being > recognized. Have you tried different fonts, in particular OCR fonts? There > are some free to download at https://www.wfonts.com/search?kwd=ocr (and > probably elsewhere), might be worthwhile to print the key using one of > those and seeing if recognition improves. > If you place an image in Google Drive, and open in Google Docs, it does a very good job with most fonts. Obviously you'll have a lot more luck if you encode in Base32 and use OCR-A. (or Base64 w/ OCR-A Extended). -- "Well," Brahmā said, "even after ten thousand explanations, a fool is no wiser, but an intelligent person requires only two thousand five hundred." - The Mahābhārata
