I have an image data set on which I am training a CNN. The data set is slightly unbalanced. So, my solution up till now was to delete some images of the majority class.
But I now realize that there are cleaner ways to deal with this. But I haven't been able to find ways to fix unbalanced image data sets. Only structured data-sets.
I would like someone to guide me to fix the unbalance, other than deleting data from the majority class.