Interpolation mode=("bilinear","nearest")

[Gijz33]

Hi!

I'm using monai.transforms.Spacingd to change the voxel size of my dataset. For interpolation of the data the option ("bilinear","nearest") is availabe. How does this interpolation work? Does it use a combination of bilinear and nearest interpolation?

I also tried to use only "bilinear" interpolation. When applying this to a binary label (for segmentation), it returns a label with multiple values (non-binary). How does Supervisedtrainer handle non-binary labels when binary labels are requested?

[Nic-Ma]

Hi @Gijz33 ,

("bilinear", "nearest") means to apply different interpolation mode for the keys accordingly, for example here use bilinear for image and nearest for label.

Thanks.

[Gijz33]

Hi @Nic-Ma,
Thank you for your response. Your answer makes a lot of sense, don't know why I couldn't come up with it.
Thanks again!

[Nic-Ma]

No problem, please feel free to raise a ticket if you face any other questions.

Thanks.