After dealing with image pyramids which generate a list of images, and the inverse filters which get a list of inputs and generate an output. I was wondering if we could introduce a base class similar to how ImageToImageFilter works, but in this case ImageToImageListFilter, or ImageListToImage.
OrfeoToolBox has the ObjectList module doing exactly this, and seems like a good idea.
I wonder what is your opinion of introducing it into ITK. In my use case, it would be nice to have a Pyramid base class, where all the metadata, and output information of the list of images is abstracted away. What do you think?