Get Better OCR Results by Fixing the Source First
Improve OCR input with sharper capture, correct perspective, and the matching language, then verify text against the source image.
By mohammed alomari · · Updated
Open the related Perspective Correction application
Make the text distinguishable
Use even lighting and a sharp image with the whole page in focus. Crop distracting background, correct the page corners, and avoid aggressive contrast changes that erase thin strokes or punctuation.
Match the recognition task
Choose the language that appears on the page. Use selectable-text extraction for a PDF that already contains text; use OCR when the page contains only an image. Test a page with the same columns and font sizes as the rest of the document.
Check high-consequence characters
Compare names, dates, totals, decimal separators, and table labels with the image. Correct a recurring capture problem before processing more pages. OCR cannot reliably recreate text that is obscured, badly blurred, or absent from the scan.