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import torch
import numpy as np
import scipy
# from https://github.com/pythongosssss/ComfyUI-Custom-Scripts
class AnyType(str):
def __ne__(self, __value: object) -> bool:
return False
def min_(tensor_list):
# return the element-wise min of the tensor list.
x = torch.stack(tensor_list)
mn = x.min(axis=0)[0]
return torch.clamp(mn, min=0)
def max_(tensor_list):
# return the element-wise max of the tensor list.
x = torch.stack(tensor_list)
mx = x.max(axis=0)[0]
return torch.clamp(mx, max=1)
def expand_mask(mask, expand, tapered_corners):
c = 0 if tapered_corners else 1
kernel = np.array([[c, 1, c],
[1, 1, 1],
[c, 1, c]])
mask = mask.reshape((-1, mask.shape[-2], mask.shape[-1]))
out = []
for m in mask:
output = m.numpy()
for _ in range(abs(expand)):
if expand < 0:
output = scipy.ndimage.grey_erosion(output, footprint=kernel)
else:
output = scipy.ndimage.grey_dilation(output, footprint=kernel)
output = torch.from_numpy(output)
out.append(output)
return torch.stack(out, dim=0)
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