http://imagej.273.s1.nabble.com/Measuring-how-far-away-an-object-is-tp5013251p5013258.html
Jackson, your task falls into the realm of photogrammetry. As far as I know
there are no specific photogrammetric plug-ins for ImageJ. Here are some
starting points for more information.
> If you know the angle of view and how big the object is and there are a
> few of them in the pic at different depths, then you can calculate the
> relative distances.
https://www.flickr.com/photos/mcammer/4572576979/>
> One of the great things about a football field is that there are lines on
> it that tell you distance. So if you have a situation like this, then it's
> a simple problem by using landmarks.
>
https://www.flickr.com/photos/mcammer/3584237720/>
> =========================================================================
> Michael Cammer, Microscopy Core & Skirball Institute, NYU Langone Medical
> Center
> Cell: 914-309-3270 ** MY OFFICE HAS MOVED TO
> SKIRBALL 2nd FLOOR, Back right **
>
http://ocs.med.nyu.edu/microscopy &
http://microscopynotes.com/>
>
> -----Original Message-----
> From: ImageJ Interest Group [mailto:
[hidden email]] On Behalf Of
> javalor
> Sent: Tuesday, June 23, 2015 3:01 AM
> To:
[hidden email]
> Subject: Measuring how far away an object is
>
> Hi,
> I need to measure how far something is in front of me using a picture
> looking towards a landscape. For example, the endzones in a football field
> is separated by 100 yards, and I want to be able to calculate with a
> picture how far that other endzone instead of walking the distance. Is this
> possible? I have see many calculations of distance or lengths when looking
> down on something, or looking from the top (such as taking a picture of a
> leaf on the ground and then measuring it's length).
> It's application is that I am taking a picture of a mountain range, and I
> need to be able to calculate how far away certain objects or landmarks are
> from the spot of the camera.
> Thanks so much! Sorry if this is obvious, I am new to ImageJ.
>
>
>
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