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⚡️ Speed up method OCRAgentTesseract.extract_word_from_hocr by 35% #2

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⚡️ Speed up method OCRAgentTesseract.extract_word_from_hocr by 35% #2

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a19a571
Optimize OCRAgentTesseract.extract_word_from_hocr
codeflash-ai[bot] Dec 19, 2025
7bd285a
changelog and version
aseembits93 Dec 19, 2025
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5 changes: 5 additions & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
@@ -1,3 +1,8 @@
## 0.18.24-dev0

### Enhancement
- Optimize `OCRAgentTesseract.extract_word_from_hocr` (codeflash)

## 0.18.23

### Enhancement
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2 changes: 1 addition & 1 deletion unstructured/__version__.py
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@@ -1 +1 @@
__version__ = "0.18.23" # pragma: no cover
__version__ = "0.18.24-dev0" # pragma: no cover
10 changes: 6 additions & 4 deletions unstructured/partition/utils/ocr_models/tesseract_ocr.py
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Expand Up @@ -26,6 +26,8 @@
from unstructured_inference.inference.elements import TextRegions
from unstructured_inference.inference.layoutelement import LayoutElements

_RE_X_CONF = re.compile(r"x_conf (\d+\.\d+)")

# -- force tesseract to be single threaded, otherwise we see major performance problems --
if "OMP_THREAD_LIMIT" not in os.environ:
os.environ["OMP_THREAD_LIMIT"] = "1"
Expand Down Expand Up @@ -152,22 +154,22 @@ def extract_word_from_hocr(
if len(character_spans) == 0:
return ""

word_text = ""
chars = []
for character_span in character_spans:
char = character_span.text

char_title = character_span.get("title", "")
conf_match = re.search(r"x_conf (\d+\.\d+)", char_title)
conf_match = _RE_X_CONF.search(char_title)

if not (char and conf_match):
continue

character_probability = float(conf_match.group(1)) / 100

if character_probability >= character_confidence_threshold:
word_text += char
chars.append(char)

return word_text
return "".join(chars)

@requires_dependencies("unstructured_inference")
def get_layout_elements_from_image(self, image: PILImage.Image) -> LayoutElements:
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