Why do we substract a background image and not divide it?

Subtracting a background image for background correction is the standard way of doing background correction to obtain the foreground.

I am wondering if there are situations, where it would make sense to divide with the background image instead.

• For example, it seems that having a uniform image intensity after division could be beneficial in interpreting an image. E.g in microscopy images.


• It also seems physically more intuitive to have uniform baseline intensity after background correction/division than to have zero baseline intensity due to subtraction.