Is it possible to modify the labels according to the random rotation of images?

Describe the question.

I am now working on a training framework for image rotation(0、90、180、270 degree) recognization task. Since my dataset is so large that it is unavailable to rotate every images tothe above four angles, becasue there is not enough space on the machine to store them.
As a result, my approach is to, in the preprocess step, randomly rotate images to one of the above four degrees and change the label accordingly. However, itmakes the time cost of preprocessing be the main part of the total time cost.
I want to use DALI to accelerate preprocessing process, and I wonder whether I could random rotate the image and change the label accordingly in the pipeline?

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