Detectron: min() arg is an empty sequence
E0604 12:01:30.918792 20556 pybind_state.h:422] Exception encountered running PythonOp function: ValueError: min() arg is an empty sequence
At:
/home/server010/disk/Detectron--s/detectron/utils/segms.py(125): polys_to_boxes
/home/server010/disk/Detectron--s/detectron/roi_data/mask_rcnn.py(46): add_mask_rcnn_blobs
/home/server010/disk/Detectron--s/detectron/roi_data/fast_rcnn.py(197): _sample_rois
/home/server010/disk/Detectron--s/detectron/roi_data/fast_rcnn.py(112): add_fast_rcnn_blobs
/home/server010/disk/Detectron--s/detectron/ops/collect_and_distribute_fpn_rpn_proposals.py(62): forward
terminate called after throwing an instance of 'caffe2::EnforceNotMet'
what(): [enforce fail at pybind_state.h:423] . Exception encountered running PythonOp function: ValueError: min() arg is an empty sequence
junxiaoge
All 3 comments
No details for reproducing given. @junxiaoge feel free to reopen if you fill out the issue template.
rbgirshick
on 4 Jun 2018
This may be due to error in Segment data.
The error in this case is happening at "x0 = min(min(p[::2]) for p in poly) ". It means the "p" i.e segment is empty list.
Please check if any of your "segmentation" field in .json file has len("segmentation") <= 6.
Ref to the code in json_dataset.py
# Valid polygons have >= 3 points, so require >= 6 coordinates
obj['segmentation'] = [
p for p in obj['segmentation'] if len(p) >= 6
]
neeraj-j
on 13 Jul 2018
@neeraj-j
thank you for you suggestion ,i have borried for this problem for two days.this happens is because of using my own datasets
rudy-letote
on 30 Nov 2018
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Most helpful comment
This may be due to error in Segment data.
The error in this case is happening at "x0 = min(min(p[::2]) for p in poly) ". It means the "p" i.e segment is empty list.
Please check if any of your "segmentation" field in .json file has len("segmentation") <= 6.
Ref to the code in json_dataset.py
# Valid polygons have >= 3 points, so require >= 6 coordinates
obj['segmentation'] = [
p for p in obj['segmentation'] if len(p) >= 6
]