ValueError: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (6,) + inhomogeneous part.

[xyj176]

--- load weight finish ---
Setting up a new session...
Max_iter = 120000, Batch_size = 20
Model will train on cuda:[0]
--- Focal_loss alpha = 0.25 ,将对背景类进行衰减,请在目标检测任务中使用 ---
--- Multiboxloss : α=0.25 γ=2 num_classes=21
Set optimizer : SGD (
Parameter Group 0
dampening: 0
initial_lr: 0.001
lr: 0.001
momentum: 0.9
nesterov: False
weight_decay: 0.0005
)
Set scheduler : <torch.optim.lr_scheduler.MultiStepLR object at 0x00000248040508B0>
Set lossfunc : multiboxloss(
(loc_loss_fn): SmoothL1Loss()
(cls_loss_fn): focal_loss()
)
Start Train......

---

Traceback (most recent call last):
File "D:\software\PyCharm\PyCharm Community Edition 2022.1.3\plugins\python-ce\helpers\pydev\pydevd.py", line 1491, in _exec
pydev_imports.execfile(file, globals, locals) # execute the script
File "D:\software\PyCharm\PyCharm Community Edition 2022.1.3\plugins\python-ce\helpers\pydev_pydev_imps_pydev_execfile.py", line 18, in execfile
exec(compile(contents+"\n", file, 'exec'), glob, loc)
File "D:/code/ai/Retinanet/Retinanet-Pytorch-master/Demo_train.py", line 36, in
trainer(net, train_dataset)
File "D:\code\ai\Retinanet\Retinanet-Pytorch-master\Model\trainer.py", line 112, in call
for iteration, (images, boxes, labels, image_names) in enumerate(data_loader):
File "D:\software\supermap\idesktopX\support\MiniConda\conda\envs\retinanet\lib\site-packages\torch\utils\data\dataloader.py", line 435, in next
data = self._next_data()
File "D:\software\supermap\idesktopX\support\MiniConda\conda\envs\retinanet\lib\site-packages\torch\utils\data\dataloader.py", line 1085, in _next_data
return self._process_data(data)
File "D:\software\supermap\idesktopX\support\MiniConda\conda\envs\retinanet\lib\site-packages\torch\utils\data\dataloader.py", line 1111, in _process_data
data.reraise()
File "D:\software\supermap\idesktopX\support\MiniConda\conda\envs\retinanet\lib\site-packages\torch_utils.py", line 428, in reraise
raise self.exc_type(msg)
ValueError: Caught ValueError in DataLoader worker process 0.
Original Traceback (most recent call last):
File "D:\software\supermap\idesktopX\support\MiniConda\conda\envs\retinanet\lib\site-packages\torch\utils\data_utils\worker.py", line 198, in _worker_loop
data = fetcher.fetch(index)
File "D:\software\supermap\idesktopX\support\MiniConda\conda\envs\retinanet\lib\site-packages\torch\utils\data_utils\fetch.py", line 44, in fetch
data = [self.dataset[idx] for idx in possibly_batched_index]
File "D:\software\supermap\idesktopX\support\MiniConda\conda\envs\retinanet\lib\site-packages\torch\utils\data_utils\fetch.py", line 44, in
data = [self.dataset[idx] for idx in possibly_batched_index]
File "D:\code\ai\Retinanet\Retinanet-Pytorch-master\Data\Dataset_VOC.py", line 48, in getitem
image, boxes, labels = self.transform(image, boxes, labels)
File "D:\code\ai\Retinanet\Retinanet-Pytorch-master\Data\Transfroms.py", line 40, in call
img, boxes, labels = t(img, boxes, labels)
File "D:\code\ai\Retinanet\Retinanet-Pytorch-master\Data\Transfroms_utils.py", line 263, in call
mode = random.choice(self.sample_options)
File "mtrand.pyx", line 920, in numpy.random.mtrand.RandomState.choice
ValueError: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (6,) + inhomogeneous part.
请问这是什么原因导致的呀