[Digikam-devel] [digikam] [Bug 326406] A picture without geolocalisation is localized in North Pole

[Gilles Caulier]

https://bugs.kde.org/show_bug.cgi?id=326406

--- Comment #9 from Gilles Caulier <caulier.gilles at gmail.com> ---
The tag GPS Data Degree of Precision is this one :

http://www.awaresystems.be/imaging/tiff/tifftags/privateifd/gps/gpsdop.html

Technically, it's DOP feature explained in these pages :

http://en.wikipedia.org/wiki/Dilution_of_precision_%28GPS%29
http://www.radio-electronics.com/info/satellite/gps/accuracy-errors-precision.php

Now, look exactly the possible values of DOP and the accuracy of GPS
measurement :

http://en.wikipedia.org/wiki/Dilution_of_precision_%28GPS%29#Meaning_of_DOP_Values

You can see : < 1 best values !!! This is the opposite of the fact listed in
this file. I'm lost.

Note : If i want to patch code to take a care about DOP before to register or
use GPS info, this will very easy. I just to add a test in this method about
DOP :

https://projects.kde.org/projects/kde/kdegraphics/libs/libkexiv2/repository/revisions/master/entry/libkexiv2/kexiv2gps.cpp#L43

The method return boolean value is GPS info are valid or not in metadata.
Testing DOP here is easy but which rules i need to plug in code exactly ?

Gilles Caulier

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