Dnia Wed, 26 Aug 2009 20:08:01 +0200
Daniel Hornung <daniel.horn...@gmx.de> napisaƂ(a):

> On Wednesday 26 August 2009, Adam Majewski wrote:
> >  Hi there,
> >
> >  i sometimes need to measure distances on photo.
> >  i do so using not only gimp but i need also calculator to do it.
> >
> >  The problem is that the measure tool doesn't have scale parameter.
> >  It would be great if i can firstly measure scale and set distance
> >  for it (ex 20px = 38m) and then measure other things that i need,
> >  where the result will be shown not only in px but also in meters
> >  (or other units ex. mile, foot, inch etc).
> Hello Adam,
> you could just set the resolution (pixels / whatever) in Image>Print Size and 
> set the display units to whatever you need in the little dropdown menu near 
> the status bar.  Then the measure tool should always give you the real-world 
> size as well.  The only thing you have to do by hand is calculating the 
> resolution in the first place.  Some image formats like tiff and png even 
> save that setting.

 wow, this is brilliant and so simple solution, why didn't i write
 this post earlier ;)

 counting scale once and then doing what is needed ;)


> >  Much further feature would be measure of areas, using also
> >  feature of scale.
> >  Simple areas like square, rectangle, or any of quadrilaterals,
> >  triangle, oval, circle, ellipse etc...
> >
> >  This would be perfect, but i don't know to whom i should send this
> >  proposition, so please forward it to right persons if they are not
> >  reading this list.
> I don't know if there are plugins for this in GIMP, but other imaging 
> applications like ImageJ/Fiji can do stuff like this easily. (They offer much 
> less creative possibilities though.)

 thank you for giving example of software, i am actually
 downloading it, maybe gimp will not be run anymore just
 to measure task. i will check it.

 thanks a lot!


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