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Mailinglist:PanoTools NG
Sender:'Mark Fink' markdfink@... [PanoToolsNG]
Date/Time:28-Apr-2016 19:20:54 +0000
Subject:RE: Re: Convert GPS to HShift and VShift


That's a good point about the precision of the GPS numbers. The hexacopter
is traveling at 8m/s, and the camera is firing every five seconds, so there
should be roughly 40 meters between each image.

So, pull the values from the images using exiftool, write them to perhaps a
comma separated value file, then open that in Excel? Once in Excel, I could
probably figure out a way to calculate the differences and convert them into
a format for PTGui. Thanks for pointing me in the right direction. I'll let
you know my progress in the next few days.


Mark Fink
Images That Transport You

-----Original Message-----
From: #removed# [mailto:#removed#] 
Sent: Thursday, April 28, 2016 9:57 AM
To: #removed#
Subject: [PanoToolsNG] Re: Convert GPS to HShift and VShift

Am 28.04.2016 um 14:42 schrieb Mark Fink:
> My question is, can I use the embedded GPS coordinates in each image 
> to produce at least estimated values for the HShift and VShift 
> parameters? That would get all the images properly positioned in a 
> grid, hopefully making the control point generator more efficient and 
> accurate

Given the best accuracy that can be achieved with classical GPS is 3 meters
(typical 6 meters) this would probably work only if the distance between two
shots is fairly larger.

Apart from that: exiftool command line version can extract any value. 
You'd need a script to calculate differences and write a .PTS or .PTO file

Erik Krause




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