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Update structures.ops.transforms.bbox3droi #3074

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fe25f7a
Merge pull request #2867 from open-mmlab/dev-1.x
ZwwWayne Jan 8, 2024
a3d1b16
Update transforms.bbox3droi
ashutoshsingh0223 Jan 2, 2025
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3 changes: 2 additions & 1 deletion mmdet3d/structures/ops/transforms.py
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Original file line number Diff line number Diff line change
Expand Up @@ -37,11 +37,12 @@ def bbox3d2roi(bbox_list):
"""
rois_list = []
for img_id, bboxes in enumerate(bbox_list):
img_inds = bboxes.new_full((bboxes.size(0), 1), img_id)
if bboxes.size(0) > 0:
img_inds = bboxes.new_full((bboxes.size(0), 1), img_id)
rois = torch.cat([img_inds, bboxes], dim=-1)
else:
rois = torch.zeros_like(bboxes)
rois = torch.cat([img_inds, rois], dim=-1)
rois_list.append(rois)
rois = torch.cat(rois_list, 0)
return rois
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