New Post: ResolutionUnit

Sample 1
Sample 2
(Note: it's just a blank image for testing)

Can you please implement ResolutionUnits in MagickImageInfo?
And a hook to identify.exe's format function if it is readily available in ImageMagick already.
It would be tedious to implement each possible info, so just let the user get what they need.

My goal is to get the physical dimension of an image using:
Physical Width = MagickImageInfo's.Width / MagickImageInfo's.ResolutionX
but I can't tell if its inches or cm.

Thanks