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Convert PDF to PNG for OCR #381

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merged 5 commits into from
Jul 10, 2023
Merged

Convert PDF to PNG for OCR #381

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Convert PDF to PNG for OCR
alexk307 Jun 27, 2023
a990664
Style
alexk307 Jun 27, 2023
3b98af3
style - missed one
alexk307 Jun 27, 2023
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bump
alexk307 Jun 27, 2023
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Import ordering
alexk307 Jun 28, 2023
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3 changes: 3 additions & 0 deletions configs/python/backend/backend.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -445,11 +445,14 @@ scanners:
- 'image/x-ms-bmp'
- 'bmp_file'
- 'image/webp'
- 'application/pdf'
- 'pdf_file'
priority: 5
options:
extract_text: False
split_words: True
tmp_directory: '/dev/shm/'
pdf_to_png: True
'ScanOle':
- positive:
flavors:
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6 changes: 6 additions & 0 deletions src/python/strelka/scanners/scan_ocr.py
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
import fitz
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import os
import subprocess
import tempfile
Expand All @@ -20,6 +21,11 @@ def scan(self, data, file, options, expire_at):
extract_text = options.get("extract_text", False)
split_words = options.get("split_words", True)
tmp_directory = options.get("tmp_directory", "/tmp/")
pdf_to_png = options.get("pdf_to_png", False)

if pdf_to_png and "application/pdf" in file.flavors.get("mime", []):
doc = fitz.open(stream=data, filetype="pdf")
data = doc.get_page_pixmap(0).tobytes("png")

with tempfile.NamedTemporaryFile(dir=tmp_directory) as tmp_data:
tmp_data.write(data)
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