title: Algorithm for measuring the Euclidean distance between pixels in an image
body: <p>I have a number of images where I know the focal length, pixel count, dimensions and position (from GPS). They are all in a high oblique manner, taken on the ground with commercially available cameras.</p>
  
  <p><a href="http://desmond.yfrog.com/Himg411/scaled.php?tn=0&amp;server=411&amp;filename=mjbm.jpg&amp;xsize=640&amp;ysize=640" rel="nofollow noreferrer" title="Sample Photograph&quot;">alt text http://desmond.yfrog.com/Himg411/scaled.php?tn=0&amp;server=411&amp;filename=mjbm.jpg&amp;xsize=640&amp;ysize=640</a></p>
  
  <p>What would be the best method for calculating the euclidean distances between certain pixels within an image? If it is indeed possible. </p>