Specific values of parameters used by transforms

[mleousi]

Hi all,

I have a question regarding the transforms that can be applied to the data.

For instance, when using the RandAffined transform, we are giving a value to be used for the translate_range and this value will then "be used to generate the shift parameter from uniform[-translate_range[0], translate_range[0])" according to the documentation. Hence, we are aware of the range from which the translate parameter is chosen, but the exact value that is finally used is not known.

I was wondering if there is a way to find out this value.

[Nic-Ma]

Hi @mleousi ,

Thanks for your interest here.
Although it's not very straightforward and not recommended, you can get the value from:

trans = RandAffined()
v = trans.rand_affine.rand_affine_grid.rotate_params

Thanks.

[mleousi]

Hi,

Thank you for your answer.

I do have one more question on this. What happens if I use a Compose block? Am I able to do something similar for each of the transforms used inside the block (supposed I have RandAffined and Rand3DElasticd inside the block)?

I assume the exact values of the different transforms are more difficult to be found in this case.

Thanks.

[Nic-Ma]

Hi @mleousi ,

Compose saves all the transforms in a list and call them one by one when called:
https://github.com/Project-MONAI/MONAI/blob/master/monai/transforms/compose.py#L211

Thanks.