It seems to me that the purpose of all image processing is to create an image that makes certain aspects of the image available and clear to the human eye. For example choice of colour palette, highlighting edges etc.
They are not intended for making measurements on except in certain special cases eg. distaces between edges. Measurements would be done on the correctly processed linear image.
This is as true for an image prepared for the BAA Gallery as one prepared for a scientific journal.
Regards Andrew
