62 lines
1.8 KiB
Python
62 lines
1.8 KiB
Python
import json
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from django.db.models import TextField, Value
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from django.db.models.functions import Coalesce
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def _safe_json_loads(raw):
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if raw in (None, ""):
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return None
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try:
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return json.loads(raw)
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except Exception:
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return None
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def is_polygon_annotation_content(content) -> bool:
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parsed = _safe_json_loads(content)
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if isinstance(parsed, dict):
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if parsed.get("type") == "polygon":
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return True
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if isinstance(parsed.get("shapes"), list):
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return True
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if isinstance(parsed, list):
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for item in parsed:
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if not isinstance(item, dict):
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continue
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region = item.get("region")
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if isinstance(region, list) and region and isinstance(region[0], (list, tuple)):
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return True
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return False
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def split_dataset_sample_annotation_content(content):
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raw = content or ""
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if not raw:
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return {"rectangle": None, "polygon": None}
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if is_polygon_annotation_content(raw):
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return {"rectangle": None, "polygon": raw}
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return {"rectangle": raw, "polygon": None}
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def get_dataset_sample_annotation_content(sample) -> str:
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if sample is None:
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return ""
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polygon = getattr(sample, "polygon", None)
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rectangle = getattr(sample, "rectangle", None)
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return polygon or rectangle or ""
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def get_dataset_sample_annotation_from_row(sample_row: dict) -> str:
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if not isinstance(sample_row, dict):
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return ""
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return sample_row.get("polygon") or sample_row.get("rectangle") or sample_row.get("annotation_content") or ""
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def annotate_queryset_with_annotation_content(queryset, alias: str = "annotation_content"):
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return queryset.annotate(
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**{
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alias: Coalesce("polygon", "rectangle", Value("", output_field=TextField()), output_field=TextField()),
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}
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)
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