23 lines
851 B
Markdown
23 lines
851 B
Markdown
# Persian / cloud OCR
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## Why deferred
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Local OCR (e.g. Tesseract + `fas`/`fa`) may be good enough — or may destroy RTL, digits, and legal phrasing. Don’t commit to a vendor until measured.
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## Trigger
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Local OCR on a Farsi Scanned PDF sample set produces systematically bad characters, broken line order, or unusable tables.
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## Options to A/B
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| Option | Pros | Cons |
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|--------|------|------|
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| Tesseract + Persian models | Free, offline, no data leaving the box | Quality varies; tuning burden |
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| Cloud OCR (Google / Azure / etc.) | Often better on Persian print | Cost, latency, compliance |
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| Commercial Persian-focused OCR | Domain fit | Vendor lock-in |
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## Success criteria
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- Character error rate low enough that answer Faithfulness in Experiments doesn’t collapse vs Text PDF baseline
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- RTL paragraphs stay coherent in Chunk Preview
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