ValueError: not enough values to unpack (expected 7, got 0)

[shxzhao]

When I retrain the model without the Pre training model，this error occurred ! I want to know how to solve it, can you give me some advice. Looking forward to your reply.

Traceback (most recent call last):
File "/home/rtx-3090/anaconda3/envs/tensorflow/lib/python3.6/multiprocessing/pool.py", line 119, in worker
result = (True, func(args, **kwds))
File "/home/rtx-3090/PycharmProjects/Point-GNN-master/Point-GNN/train.py", line 85, in fetch_data
cam_rgb_points, box_label_list = aug_fn(cam_rgb_points, box_label_list)
File "/home/rtx-3090/PycharmProjects/Point-GNN-master/Point-GNN/models/preprocess.py", line 468, in multiple_aug
cam_rgb_points, labels, **aug_config['method_kwargs'])
File "/home/rtx-3090/PycharmProjects/Point-GNN-master/Point-GNN/models/preprocess.py", line 301, in random_box_shift
appr_factorboxes_3d_to_corners(label_boxes))
File "/home/rtx-3090/PycharmProjects/Point-GNN-master/Point-GNN/models/nms.py", line 35, in boxes_3d_to_corners
x3d, y3d, z3d, l, h, w, yaw = box_3d
ValueError: not enough values to unpack (expected 7, got 0)
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/home/rtx-3090/PycharmProjects/Point-GNN-master/Point-GNN/train.py", line 542, in
= data_provider.provide_batch(batch_frame_idx_list)
File "/home/rtx-3090/PycharmProjects/Point-GNN-master/Point-GNN/train.py", line 482, in provide_batch
batch_list.append(self.provide(frame_idx))
File "/home/rtx-3090/PycharmProjects/Point-GNN-master/Point-GNN/train.py", line 475, in provide
return self.async_load(frame_idx)
File "/home/rtx-3090/PycharmProjects/Point-GNN-master/Point-GNN/train.py", line 447, in async_load
data = self._results[frame_idx].get()
File "/home/rtx-3090/anaconda3/envs/tensorflow/lib/python3.6/multiprocessing/pool.py", line 644, in get
raise self._value
ValueError: not enough values to unpack (expected 7, got 0)

[WeijingShi]

Hi @shxzhao,

Thanks for your interest in our work.

It seems one of your label_boxes is empty. But the label_boxes should not have empty boxes as it is generated by:

Point-GNN/models/preprocess.py

Line 296 in 48f3d79

label_boxes = np.array([

label_boxes should be either empty or an N by 7 arrays.

Did you modify the code or dataset?

Thanks,