import torch
_ = torch.manual_seed(42)
from torchmetrics.image import SpectralDistortionIndex
preds = torch.rand([16, 3, 16, 16])
target = torch.rand([16, 3, 16, 16])
metric = SpectralDistortionIndex()
values = [ ]
for _ in range(10):
    values.append(metric(preds, target))
fig_, ax_ = metric.plot(values)