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fix: support decollate for numpy scalars #8470

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fix: support decollate for numpy scalars #8470

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1e0a554
Support decollate for numpy scalars
arthurdjn Sep 29, 2025
2473d22
Remove redundant decollate condition for torch/numpy scalars
arthurdjn Sep 29, 2025
57335f3
Merge branch 'dev' into support-decollate-batch-numpy-scalars
arthurdjn Oct 1, 2025
adb77ce
Merge branch 'dev' into support-decollate-batch-numpy-scalars
KumoLiu Oct 2, 2025
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5 changes: 3 additions & 2 deletions monai/data/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -597,11 +597,12 @@ def decollate_batch(batch, detach: bool = True, pad=True, fill_value=None):
type(batch).__module__ == "numpy" and not isinstance(batch, Iterable)
):
return batch
# if scalar tensor/array, return the item itself.
if getattr(batch, "ndim", -1) == 0 and hasattr(batch, "item"):
return batch.item() if detach else batch
if isinstance(batch, torch.Tensor):
if detach:
batch = batch.detach()
if batch.ndim == 0:
return batch.item() if detach else batch
out_list = torch.unbind(batch, dim=0)
# if of type MetaObj, decollate the metadata
if isinstance(batch, MetaObj):
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