Re: [Gpsbabel-misc] Wiki (was: How do you sync GPS-data with photos?)

[Al B. <gps...@ml...>]

Am Donnerstag, 24. Mai 2007 13:31 schrieb Andy Armstrong:
> On 24 May 2007, at 00:03, Beverly Howard wrote:
> >>> What does already exist for syncing the GPS-data with photos? <<
> >
> > google time... there are at least a few gps/photo sync tools out there
> > already, but it's been a year since I looked, so, can't quote names.
>
> Time to plug the wiki :)
>
> 1) We have a wiki: http://wiki.gpsbabel.org
>
> 2) I've created a page about geocoding photos:
>       http://wiki.gpsbabel.org/index.php/Geocode_photos
>
> 3) It has no content...
>
> Please feel free to sign up for an account and then edit that page to
> reflect whatever wisdom emerges from this thread.

I have some ideas how the workflow could be with a  Wintec WBT-201 (G-Rays 2), 
to get the gps-data in the picture.

First you have to decide how you can calculate the time-difference between 
camera and gps-tracker later. Sometimes the difference will be important, 
sometimes not, but it is hard to say in advance, when it is.

I am thinking in categories of picture-albums.

Let's say you make a trip around 3 lakes (or whatever) and you plan to make a 
_lot_ of pictures, you will probably create 3 photo-albums, one for every 
lake. When you make the _first_ picture at lake 1, you press the track-button. 
When you reach lake 2, you press the track.-button again, a.s.o.  This means 
you may _not_ delete the first picture of every track, to calculate the time 
difference later. If you do, you have a chance to calculate the time 
difference, as long as _1_ photo exists, when a track was stored.

At home you create a gpx-file with gpsbabel. At the moment I don't know what 
is possible to do with gpsbabel, but when I read the docu, it looks like you 
can do a lot. I assume my question in "Extracting timeperiods and certain 
tracks" will be answered and then you have a small file according to the 
trip(s) which can be used with gpsphoto (or whatever)

Since I use exiftool for a _lot_ of metadata-changes I have to check if I can 
use the syncs created by gpsphoto directly with exiftool when I change other 
tags and use "--dry-run|-n " with gpsphoto.

For my next steps I have to know:
How to extract timeperiods/tracks with gpsbabel
How to compile gpsphoto from cvs (but I think it runs non-compiled already)

I will inform you, when something works as expected and which options I use.

There is also a Kipi-plugin to sync gps. Since I would like to combine it with 
my bash-script, this is not a solution for me.

Al