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OCR

Under Review

This article is currently under review. Some content may be incomplete or inaccurate.

Category: Processing

The OCR activity extracts machine-readable text from each page image. That text feeds Split, Classify, and Extract, and is also used to locate field values on the page.

Notes​

  • OCR can optionally detect barcodes on each page for use in splitting or extraction.
  • The document language is detected automatically and stored with each page's results, at no extra cost. It is used, for example, as the document language of PDF/A-3a archival exports. Microsoft engines detect it on the same call; RapidOCR reports its script model; Tesseract reports the configured recognition language when a single one is selected.
  • With the Tesseract engine, select the recognition language(s) in the step settings. The list offers the language packs installed in your deployment; selecting several recognizes mixed-language documents at some accuracy cost.
  • Text quality depends on the Import DPI: low-resolution scans produce weaker OCR.