Difference between MaxUnpool3d and ConvTranspose3d

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Hi!, I’d like to know if there’s some difference between these two functions. I thought ConvTranspose3d was the inverse of MaxPool3d but now I saw that there is also MaxUnpool3d, so Wich one should I apply?

I want to implement a variation of the 3D U-net model.

I'm speaking about the up yellow arrows (3D U-net model)
I'm speaking about the up yellow arrows (3D U-net model)1003×540 78.5 KB

I’m speaking about the up yellow arrows of the model above (3D U-net model)

Thanks!

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ConvTranspose3d have learnable parameters, whereas MaxPool3d doesn’t.

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Conv Transpose is the inverse of Conv, it works somehow like a convolution, while maxunpool only repeats your pixels to achieve the right output shape. Rather than maxunpool I would use torch.nn.interpolate if you dont want some trainable parameters and conv transpose if you want some

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