I am playing around with the xtra_tfms and i have trouble implementing some of them for my data augmentation.
Contrast for example (https://docs.fast.ai/vision.transform.html#_contrast).
I have tried a couple of different inputs, but i always end up getting errors that something is wrong with my data. Ive read through the doc multiple times, but i simply do not understand the syntax the hyperparameters should be written in. Can someone maybe give me a working example of a contrast on a scale from 0.5 to 1.5?