cv2.error: Unknown C++ exception from OpenCV code

[shahzad-ali]

Hi @HuXiaoling 👋🏼

I'm testing the warping_loss through the following code:

y_pred = torch.randn((1, 4, 128, 128), device='cuda')
y_gt = (torch.randn(1, 4, 128, 128) > 0.5).to(torch.uint8).cuda()
y = warping_loss(y_pred, y_gt)

Unfortunately, I'm getting the following error caused by the line number_fore, _ = cv2.connectedComponents(patch, 4)

Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "<input>", line 116, in warping_loss
  File "<input>", line 64, in update_simple_point
  File "<input>", line 17, in decide_simple_point_2D
cv2.error: Unknown C++ exception from OpenCV code

If you could assist me with this issue, I would greatly appreciate it.

[Grople]

I met the same problem