self.mask2box(mask) ？

[watertianyi]

raceback (most recent call last):
File "/data/tools/1.py", line 330, in
labelme2coco(labelme_json,save_image_dir, coco_dir)
File "/data/tools/1.py", line 44, in init
self.save_json()
File "/data/tools/1.py", line 182, in save_json
self.data_transfer()
File "/data/tools/1.py", line 67, in data_transfer
self.annotations.append(self.annotation(points,label,num))
File "/data/tools/1.py", line 122, in annotation
annotation['bbox'] = list(map(float,self.getbbox(points)))
File "/data/tools/1.py", line 144, in getbbox
return self.mask2box(mask)
File "/data/tools/1.py", line 153, in mask2box
left_top_r = np.min(rows) # y
File "/home/anaconda3/envs/snake/lib/python3.7/site-packages/numpy/core/fromnumeric.py", line 2618, in amin
initial=initial)
File "/home/anaconda3/envs/snake/lib/python3.7/site-packages/numpy/core/fromnumeric.py", line 86, in _wrapreduction
return ufunc.reduce(obj, axis, dtype, out, **passkwargs)
ValueError: zero-size array to reduction operation minimum which has no identity

[fcakyon]

you can use https://github.com/fcakyon/labelme2coco for improved version