Detectron2 Augmentation Dataloader in-place or copy of image

In regards to the Augmentation techniques in Detectron2 and using a custom dataloader. I was wondering when doing these augmentations is there a copy of the image being made and then doing the augmentation (in effect increasing our dataset and still training on the original image)? Or is it taking our image in the dataset and doing a augmentation in-place randomly?

I haven't seen this stated explicitly anywhere unless I missed it.

I ask because I want to increase my dataset with augmented images since it is small in size.

Thank you for any clarification

No file or test is named in the issue. Read the Detectron2 augmentation and custom dataloader entry points to determine whether transforms copy or mutate images and whether they persist augmented samples; done means documenting that behavior and how to create an expanded dataset, if supported.

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