How are images being resized (what interpolation methods)?

[bigmit2011]

I'm going through your README and you show different options of resizing:

One use Vision (which does the resizing)

Or use:
if let pixelBuffer = image.pixelBuffer(width: 224, height: 224)

I'm wondering how are these images being downsized. What interpolation methods are used when downsizing. I realized playing with Coreml in Python that
different interpolation methods affect the accuracy of the model.

Thank you so much for this repository.

[Matthijs Hollemans]

It uses one of the vImageScale methods to do the resizing. I'm not 100% sure but I think that is bilinear.