Working notes on Config: Page segmentation modes and Character set.
Page segmentation modes
PSM.
https://pyimagesearch.com/2021/11/15/tesseract-page-segmentation-modes-psms-explained-how-to-improve-your-ocr-accuracy/
9. All text - in no particular order.
Character set
Tessedit_char_whitelist abcdefghijklmnopqrstuvwxyz.
Updated:
2026 Aug 19
