Add Brain LDM to model-zoo

[Warvito]

Implements #30

[Warvito]

@ericspod probably for the metadata of generative models (example here), we will have schemas different from the ones availabe in MONAI-extra-test-data . Should we create an issue in https://github.com/Project-MONAI/MONAI-extra-test-data to include new schemas?

[ericspod]

@Warvito We might have to add a new schema for now yes. What I had wanted for a more ideal solution was a schema that was general enough to cover any input/output definition for a model, so something that would allow us to define an arbitrary set of inputs that are tensors with the given data or some other Python object, and similar for outputs. Right now we're limited to explicitly-named arguments and outputs since that's the intial way we figured how to do the schema.

If someone knows more about JSON schemas wanted to figure out how to generalise things we could get a schema to suit everyone.

[Warvito]

Hi @ericspod , I was trying to write the bundle for this model, but due its particular inference method, it would not be possible to use the inferer's method. Is it possible to define for loops inside the bundle? would you have an example of it?

[ericspod]

I wouldn't suggest trying to do things directly in the bundle due to the limitations of the format, it's perhaps possible but would be really ugly Python code to make it happen. The MedNIST GAN bundle illustrates defining a script directory where you can put your own code, I would put a routine into a source file there which does the inference you want with the network, scheduler, etc. as arguments. @Warvito

[Warvito]

I wouldn't suggest trying to do things directly in the bundle due to the limitations of the format, it's perhaps possible but would be really ugly Python code to make it happen. The MedNIST GAN bundle illustrates defining a script directory where you can put your own code, I would put a routine into a source file there which does the inference you want with the network, scheduler, etc. as arguments. @Warvito

Thanks for the help. I will it ^^

[marksgraham]

Hi Walter, this is really cool, congrats!
The only issue for me is output_dir not getting created. Do you find this on your end? If not let me know and I'll try to fix on my end - maybe its something weird about my system.

[marksgraham]

All works now!