Posted by
Cammer, Michael on
Jun 23, 2015; 3:23pm
URL: http://imagej.273.s1.nabble.com/Measuring-how-far-away-an-object-is-tp5013251p5013257.html
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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