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Fix: swap input_amplitude and target_amplitude in JukeboxLoss.forward #8821

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Fix: swap input_amplitude and target_amplitude in JukeboxLoss.forward #8821

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d0efb62
Fix: swap input_amplitude and target_amplitude in JukeboxLoss.forward
Zeesejo Apr 11, 2026
4417d79
Fix: remove redundant `1-` from SSIMLoss docstring examples
Zeesejo Apr 11, 2026
3777601
Merge branch 'dev' into dev
ericspod Apr 14, 2026
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4 changes: 2 additions & 2 deletions monai/losses/spectral_loss.py
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Expand Up @@ -55,8 +55,8 @@ def __init__(
self.fft_norm = fft_norm

def forward(self, input: torch.Tensor, target: torch.Tensor) -> torch.Tensor:
input_amplitude = self._get_fft_amplitude(target)
target_amplitude = self._get_fft_amplitude(input)
input_amplitude = self._get_fft_amplitude(input)
target_amplitude = self._get_fft_amplitude(target)

# Compute distance between amplitude of frequency components
# See Section 3.3 from https://arxiv.org/abs/2005.00341
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6 changes: 3 additions & 3 deletions monai/losses/ssim_loss.py
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Expand Up @@ -111,17 +111,17 @@ def forward(self, input: torch.Tensor, target: torch.Tensor) -> torch.Tensor:
# 2D data
x = torch.ones([1,1,10,10])/2
y = torch.ones([1,1,10,10])/2
print(1-SSIMLoss(spatial_dims=2)(x,y))
print(SSIMLoss(spatial_dims=2)(x,y))
# pseudo-3D data
x = torch.ones([1,5,10,10])/2 # 5 could represent number of slices
y = torch.ones([1,5,10,10])/2
print(1-SSIMLoss(spatial_dims=2)(x,y))
print(SSIMLoss(spatial_dims=2)(x,y))
# 3D data
x = torch.ones([1,1,10,10,10])/2
y = torch.ones([1,1,10,10,10])/2
print(1-SSIMLoss(spatial_dims=3)(x,y))
print(SSIMLoss(spatial_dims=3)(x,y))
"""
ssim_value = self.ssim_metric._compute_tensor(input, target).view(-1, 1)
loss: torch.Tensor = 1 - ssim_value
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