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Print Page - Anybody geotagging?

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General => GPS/ Geotagging => Topic started by: David C. Buchan on February 18, 2007, 04:11:58 AM



Title: Anybody geotagging?
Post by: David C. Buchan on February 18, 2007, 04:11:58 AM
Hi all,

I'm interested to know if anyone has a workable geotagging system running. I can tag my photos on flickr but that's once they are out of Iview. It would be nicer to store some metadata somewhere and read it into the file so that flickr/others can read it directly.

David


Title: Re: Anybody geotagging?
Post by: Terence Dodge on February 19, 2007, 12:08:10 PM
Hi all,

I'm interested to know if anyone has a workable geotagging system running. I can tag my photos on flickr but that's once they are out of Iview. It would be nicer to store some metadata somewhere and read it into the file so that flickr/others can read it directly.

David

Hello Mr Buchan

I will make a couple of assumptions here ( you kindly correct me as necessary ).

You said "It would be nicer to store some metadata somewhere and read it into the file so that flickr/others can read it directly."

 This means to me that you need to manually enter the GPS data as opposed to camera w/GPS recording the data directly into the EXIF header space. So depending on the platform/box, look at "RoboGeo" for windows ( looks at most file types, JPEG, dng and others  $79.99 or such). Couple of others however I have not pursued info on them.

If apple user you have one choice that I am aware of "GPS-Photo-Linker" it is donation ware ( I started with this, only does JPEG, guy that wrote it is just entering a doctorial PhD program in Oceanography and will not be updating it anytime soon ) there may be some other programs that will let you manipulate EXIF header info but I  am not aware of them.

Please visit versiontracker.com  for either some other EXIF editor or to find a link for "GPS-Photo-Linker" to download.

Terence


Title: Re: Anybody geotagging?
Post by: peterkrogh on February 19, 2007, 06:38:38 PM
David,
I've just started playing with this technology.  While it seems incredibly promising, the tools seem to be largely missing.  I'm tagging lots of new images in-Camera (Nikon has built-in support), and will start working with them in earnest later this year.

I can see lots of needs - mostly ones that interface with DAM software.I'd like to be able to link the IPTC location fields up to a Google (or other) database to suck GPS data back into the database record

I think there needs to be some kind of margin of error tag that goes with this.  If I have photos shot in Boston, I don't want to have to choose an arbitrary place as the location, I'd like to choose a vector-drawn area. (not sure if the current spec could suport that.)

I'd like a much better interface to navigate through coordinates and time.  It' kind of a 4 dimensional problem.

I'll spin off a separate group for those who want to talk about this stuff.
Peter


Title: Re: Anybody geotagging?
Post by: David C. Buchan on February 19, 2007, 06:56:02 PM
Thanks for the links Terence.

One of the problems I see with products such as RoboGeo or even linking directly through flickr is they require me to remember the locations or re-set them each time. It would be nice if coordinates could be stored against a location in iView and use a script to put it into the jpegs (using exiv2) for example. Then I can export my jpegs for flickr, run a script over them to prepare the metadata and upload once. Flickr then does the rest of the work.

And I would do this without touching the original files.

David


Title: Re: Anybody geotagging?
Post by: johnbeardy on February 19, 2007, 09:49:27 PM
David

I've never heard of exiv2 but it seems to have a command line utility, that accepts arguments, so in theory should be scriptable from iView. I don't see geographical exif items in the spec, though. You could store the co-ordinates in a custom field(s) but you would have to be very consistent in data entry. possibly a job for the vocab editor?

John


Title: Re: Anybody geotagging?
Post by: Dierk on February 20, 2007, 12:45:55 AM
For a few weeks now I have a still clumsy solution: Nikon D21x, Nikon D200, an MC-35 cable by Nikon, a Garmin GPS 72 plus Garmins original serial cable. It works, and with some ball bungees or velcro cable binders the whole set-up doesn't take too much space.

The downsides are obvious, the Garmin serial cable is long, the GPS 72 is big, Nikon's cable is a bit bulky, Nikon's 10-pin connector is - as with all their cables - a drag.

A bit of personal history:

Last year I got myself a Wintec WBT-100, a very small Bluetooth GPS receiver, which orignally should provide my LOOX with data for routing. During long and dark winter evenings I thought it would be a good idea to use the Wintec for my cameras. So I started researching and buying cables and adaptors - from mini USB B to USB A, from USB A to 9-pin D-sub, from 9-pin D-sub to female D-sub, which would then connect to the MC-35. This surely isn't the most viable connection, electrically or mechanically but should work.

It doesn't - and not because there's too many adabptors in-between; actually the lengths of this non-solution was much shorter than the Garmin-Nikon solution. The problem is the USB part, Nikon's cameras don't read them, even if the data itself comes in NMEA protocol. The problem here is that even Garmin abandons the old serial standard, newer devices come with USB connections, some seem to have both, USB and the old, round Garmin plug. Sadly the proprietary Garmin plug on those is not the same as the old one, they are meant to connect external power or probably an antenna but not to send data to other devices.*

I stumbled some commercial [but self-made looking] solutions like Red Hen, which are very expensive and use the camera's hotshoe to hold the [big] Garmin/Magellan devices. Either the developers are no photographers ... Much more interesting was a DIY solution by a guy on DPreview, who had come up with a Bluetooth receiver to connect via Nikon's 10-pin to the camera. Alas, he did not get back to me. would be nice to have that, as one could then put a small BT receiver into each camera, both getting the GPS data from an equally small GPS receiver. Currently Nikon's 10-pin makes it  cumbersome to switch cameras during a session [unless the photographic objects are immovable].

The big downside of all software based solutions is their support of JPEG only. I need my data in RAW files.

There's not much convincing me to upgrade from my current cameras to a presumed D3, one would be built-in GPS. Shouldn't be too difficult to engineer, the receiver chips are no larger than a fingernail, the whole camera body could be used as an antenna, software interface is already in Nikon's pro cameras since the D1.




*eTrex and Gecko come with a serial output, it uses a new proprietary Garmin plug; the Foretrex uses 2.5 mm streo jack. Since Garmin's cables are quite expensive I settled for a bigger device with the old plug for the cable I already own.


Title: Re: Anybody geotagging?
Post by: gsvenningsen on February 20, 2007, 02:00:00 AM
I'm interested to know if anyone has a workable geotagging system running. I can tag my photos on flickr but that's once they are out of Iview. It would be nicer to store some metadata somewhere and read it into the file so that flickr/others can read it directly.

David,

Here are two ways to GEO-tag images, depending on whether you have a GPS-reciever or not:

1. Picasa and Google Earth.
Select the images in Picasa and choose Tools > Geotag > Geotag with Google Earth...
You will manually have to navigate to the location of each image. There is a "Tag all" option for images taken on the same location though.

2. Using a GPS-tracklog.
Make sure that the camera and GPS-clocks are synchronized. Log the position while taking the photos. Use some software to calculate the position based on the GPS track log and stamp the position in Exif. There are not too much software that is able do this, but RoboGeo and WWMX location stamper can. I personally prefer WWMX which is free.

As far as I know there is no way to use these techniques on RAW images. I hope this will be possible in the near future. I am, therefore, saving my track logs for later.


Title: Re: Anybody geotagging?
Post by: David C. Buchan on February 20, 2007, 02:47:44 AM
Peter,

I can see lots of needs - mostly ones that interface with DAM software.I'd like to be able to link the IPTC location fields up to a Google (or other) database to suck GPS data back into the database record
I've found the 4 level IPTC fields (country, state/province/city and location) to be too limiting in number. To tie all photos to a single location can be too confining if the location is relatively large (eg. shots taken around one of the world's disneylands).

I think there needs to be some kind of margin of error tag that goes with this.  If I have photos shot in Boston, I don't want to have to choose an arbitrary place as the location, I'd like to choose a vector-drawn area. (not sure if the current spec could suport that.)
Hadn't thought of the approach of a tag error.



Title: Re: Anybody geotagging?
Post by: David C. Buchan on February 20, 2007, 02:50:14 AM
I'm interested to know if anyone has a workable geotagging system running. I can tag my photos on flickr but that's once they are out of Iview. It would be nicer to store some metadata somewhere and read it into the file so that flickr/others can read it directly.

David,

Here are two ways to GEO-tag images, depending on whether you have a GPS-reciever or not:

1. Picasa and Google Earth.
Select the images in Picasa and choose Tools > Geotag > Geotag with Google Earth...
You will manually have to navigate to the location of each image. There is a "Tag all" option for images taken on the same location though.

2. Using a GPS-tracklog.
Make sure that the camera and GPS-clocks are synchronized. Log the position while taking the photos. Use some software to calculate the position based on the GPS track log and stamp the position in Exif. There are not too much software that is able do this, but RoboGeo and WWMX location stamper can. I personally prefer WWMX which is free.

As far as I know there is no way to use these techniques on RAW images. I hope this will be possible in the near future. I am, therefore, saving my track logs for later.

1. Picasa an Google Earth is not a scalable solution and by scalable I mean able to handle large volumes of images. If I come back to a location I'd rather have iView remember the coordinates for that location rather than have to go into Picasa and Google Earth again. At least for me I can't get it to work well.

2. A GPS is another piece of equipment and then there is still the need to populate the photo. Also, a GPS may put in a slightly different location per photo. Peter's concept of tag error above comes into play here.

Thanks for the ideas and for others they may work fine. For me at the moment they wont.

David


Title: Re: Anybody geotagging?
Post by: David C. Buchan on February 20, 2007, 02:51:59 AM
David

I've never heard of exiv2 but it seems to have a command line utility, that accepts arguments, so in theory should be scriptable from iView. I don't see geographical exif items in the spec, though. You could store the co-ordinates in a custom field(s) but you would have to be very consistent in data entry. possibly a job for the vocab editor?

John

I've successfully scripted it from iMatch before. One of the limitations of all these tools is that they tend to be confined to JPEG only, even if the EXIF spec appears elsewhere. Vocab editor may be a good idea. I hadn't thought of that. Still fairly manual though. It would work on a per-shoot basis. I'm recataloging 8000 images.

David


Title: Re: Anybody geotagging?
Post by: peterkrogh on February 20, 2007, 07:20:46 AM
>I've found the 4 level IPTC fields (country, state/province/city and location) to be too limiting in number. To tie all photos to a single location can be too confining if the >location is relatively large (eg. shots taken around one of the world's disneylands).

David,
The Location is a Child of the City, State, or country (whichever is the appropriate next level up).  So Disneyland in Anaheim, California, USA is not the same as Disneyland in Baghdad, Iraq.

I have not had time to read this whole discussion, but there seems to be some valuable expertise in this group.  I will look forward to waht we come up with.
Peter


Title: Re: Anybody geotagging?
Post by: David C. Buchan on February 21, 2007, 04:32:25 PM
>I've found the 4 level IPTC fields (country, state/province/city and location) to be too limiting in number. To tie all photos to a single location can be too confining if the >location is relatively large (eg. shots taken around one of the world's disneylands).

David,
The Location is a Child of the City, State, or country (whichever is the appropriate next level up).  So Disneyland in Anaheim, California, USA is not the same as Disneyland in Baghdad, Iraq.

I have not had time to read this whole discussion, but there seems to be some valuable expertise in this group.  I will look forward to waht we come up with.
Peter

I too understood location to be child of a city - your wording helps me to explain. I'm talking about the child of the child. So whereas Disneyland is a location, Space Mountain is it's child. It may not be relevant from a IPTC point of view but for fairly "accurate" GPS encoding Space Mountain is a definate sub-location.

David


Title: Re: Anybody geotagging?
Post by: peterkrogh on February 21, 2007, 08:31:25 PM
David,
Which points to Beardy's point in the other thread that GPS data is more durable and exact (even with margin of error discussed) than the IPTC Location hierarchy schema.

On the other hand, if most images had even *some* location information as part of the metadata it would be a pretty big improvement.

Peter


Title: Re: Anybody geotagging?
Post by: Joe Colson on February 23, 2007, 06:58:53 AM
I use this: http://forums.dpreview.com/forums/read.asp?forum=1021&message=19111479 solution posted on DPReview and it works well.  It takes a little electronics skill to implement, but it works and is not too cumbersome (the disadvantage of most solutions).

Joe
www.joecolsonphotography.com



Title: Re: Anybody geotagging?
Post by: DirkV on February 23, 2007, 08:44:47 AM
On my Mac I use GPSPhotoLinker. This allows me to use gps data in tracks of my Garmin Etrex device with the NEF files of my D70. I've only started recently to do this and it seems to work fine. I still need to find time to look deeper in this.

Dirk


Title: Re: Anybody geotagging?
Post by: Jean-François Schmitz on March 07, 2007, 08:15:47 AM
On a PC I use RoboGEO (http://www.robogeo.com/home/) wich works pretty well, especially with Garmin receivers which are supported natively.

The key is to synchronize the clocks of your camera and your receiver, which can be done very simply by taking a pic of your receiver showing the date and time. In the tool, after having loaded your pics and the GPS tracklog, you can simply synchronize them by selecting the pic with the time, and enter that time in the tool, which will then calculate the time offset between camera and receiver.

Once this is done, you can write the GPS data to the EXIF fields, tag the image itself, export the track plus pictures to Google Earth and Google Maps, etc...

It works with JPG, TIFF, PNG and even DNG (though I did not yet test the latter), but not the native RAW formats.

Anyway, it's pretty cool, I use is often to tag pictures I've taken while geocaching. Because of course, a prerequisite is that you have your GPS receiver with you - and switched on ;-) - all the time you are taking pictures. You can view some examples of tagged pictures here (http://www.geocaching.com/seek/log.aspx?LUID=a3e7d9b4-daa8-4386-8f6b-c3e291822851).

If you use OziExplorer (http://www.oziexplorer.com) on a PC, there is a similar but less sophisticated tool,   OziPhotoTool (http://www.oziphototool.com) that will do similar stuff for viewing in OziExplorer, but will not write to the EXIF tags.

Jean-François


Title: Re: Anybody geotagging?
Post by: Jean-François Schmitz on March 07, 2007, 08:57:16 AM
And here is an example of what can be done in Google Maps: Euro Space Center (http://geocaching.schmitz.cc/googlemaps/EuroSpaceCenter/map.htm).

Try to find the picture that I used to synchronize the camera and receiver  ::)


Title: Re: Anybody geotagging?
Post by: Dierk on March 07, 2007, 09:27:45 AM
Among the PR debris pre-PMA I found an interesting thingy from German company JOBO:
http://www.imaging-resource.com/EVENTS/PMAS07/1173138994.html

If it is available [JOBO's Giga Vault Pro evolution anybody?] and if it works as easily as it is described, it's a near perfect solution for all those cameras that cannot be connected directly to a GPS receiver. It also shows Nikon that it is possible to come up with intelligent solutions. The only real fault I find is the complete reliance on the hot-shoe and the camera's syncing. Probably there will be an adaptor solution, too.


Title: Re: Anybody geotagging?
Post by: Jean-François Schmitz on March 07, 2007, 10:43:51 AM
As far as I understand from the press release, that JOBO stuff actually is a standalone GPS that stays in standby, sleep mode (to save batteries) and wakes up when it gets a signal from the flash hot-shoe that a picture is being taken. I don't think (but I might be wrong) that it does other syncing, like clock, and certainly not GPS data transfer to the camera body.

Other than that, the post processing is the same: once back home, you download the GPS positioning data from the device, and then you sync it with the pictures.

This makes me think that all those solutions available today boil down to the quality/completeness of the accompanying software.

So the choice is yours. Either you don't know anything about GPS, and you don't want to know  ;), and you go for such a device, or Sony's GPS-CS1 (http://www.sonystyle.com/is-bin/INTERSHOP.enfinity/eCS/Store/en/-/USD/SY_DisplayProductInformation-Start?ProductSKU=GPSCS1), or, like me, you are already a GPS geek, and you find a cheap solution to sync your receivers' tracklog with your picture.

 ::) ;) :D


Title: Re: Anybody geotagging?
Post by: DanZemke on March 07, 2007, 03:08:47 PM
Dierk,

Thanks very much for the information about the JOBO PhotoGPS.  If I could buy it today, I would.

Having the camera embed the coordinates in the raw files would be ideal, but that is not an option for current Canon shooters.  So this looks like a better solution than the alternatives.  It probably has better battery life and/or is smaller/lighter than the continuous data loggers.  And unlike using a normal portable GPS, there is no separate button to press (or forget to press).  Also, it has a USB interface, rather than the old serial style (don't have a serial port on my notebook).  For $150, I'm sold.  Hope it uses a SiRFstar III chip (faster fix and better sensitivity than the older 12 channel GPS devices).

Dan



Title: Re: Anybody geotagging?
Post by: Dierk on March 08, 2007, 12:33:18 AM
Jean-Francois, the difference between current devices and the JOBO [on paper] is that it comes with its own software developed specifically to get the track data into your photo file. Not only that, syncing is automatic, track point recording with the photo is automatic, and the software does what is the next logical step - as I've outlined before I knew about the JOBO - getting the names of places from a database, writing them into the appropriate IPTC fields. Quite impressive!

Of course it is not a perfect solution, but Nikon's way of tagging directly isn't either. Last week I went out with my Garmin 72 cabled to the D2x; I've compacted the cable behind the very big Garmin, then used a rubber band to fix the whole big bundle to the lowest part of my UPstrap [quick release]. The whole set-up is actually easier to handle than it looks - until you put on your 10.5 mm Fisheye. Personally I like to concentrate on framing a good and sensible picture, especially with a Fisheye, alas, you have to be extra careful with the lower left corner as the cable has a way to creep in.

The other downside is Nikon's stupid 10-pin connector, which will not hold on its own unless you screw it in, which is a major hassle. And if you use two GPS-ready cameras you'll either miss shots or have to come to grips that only one has the GPS data [third option suits Nikoan and Garmin: get a second GPS receiver with all the necessary cables].

Eventually two solutions will come up:

1. Bluetooth in GPS-ready cameras, allowing any BT GPS receiver to link up. The camera's processor will then take the track point data from the receiver whenever a photo is taken. I have seen several Nikon photographers on the Net who build their own BT receiver for Nikon's 10-pin connector.
2. Professional and semi-professionl [probably even most other, too] cameras will have their own GPS device in the camera. Since the actual GPS chips are very small and the antenna doesn't need to be particularly big, no problem at all.

For the time being the JOBO seems to be the best there is. Hope it supports RAW ...


Title: Re: Anybody geotagging?
Post by: Jean-François Schmitz on March 08, 2007, 02:01:34 AM
Hi Dierk,

What you say is exactly what I meant   ;)  - for the moment being, it all boils down to software - unless you are the happy owner of a body that takes GPS data from some source and embeds it automatically at the time the picture is being shot.

I own a Canon EOS30D, and I have a Garmin GPSMap 60 CSx as well. So in my case, the easiest is to clip the GPS device on by belt, or put it inside my backpack or Lowerpro bag, and just forget about it (its SiRF III chip is so sensitive that it keeps satellite track even in the car or inside a plane, no worries  :D). It lives about 20 hours on two rechargeable AA batteries. No wiring or bluetooth needed between camera and GPS receiver. As the receiver continuously keeps a tracklog, there is no need to actually take a waypoint at each location where you take a picture. And it's immediate, wheras the JOBO needs to be awaken from it "sleep" mode, which, according to the release, can take a couple of seconds. 

Once back home, I process to pictures and produce JPGs. I connect the GPSMap to my PC, fire up RoboGEO, and in 30 secs I read in the pictures, the tracklog from the receiver, and that's it. After I've saved the project, I could actually delete the tracklog in the receiver (though I always back it up anyways  ;)). The project can be reloaded at any time to process the pics, generate Google maps, etc...

Other advantage of this solution: if you have several cameras, you can geotag the pictures of all of them, at least if they stay relatively close together  ::) For instance, if my kids accompany me and they take pics with my good old Ixus 400, those can be geotagged as well.

As mentionned in another thread, GPS accuracy today is down to about 10 meters, even 3 meters with WAAS (thanks to Bill Clinton who forced the US Army to disable the intentional degradation (http://www.geocaching.com/about/history.aspx) of civilian GPS frequencies). This means in practice, that the positioning error might be as "large" as 30 (10 in WAAS) meters. Enough to point you to the wrong side of the road or the brook, yet more than acceptable in 99% of applications.

As said in an earlier post, I see a clear benefit of the JOBO and Sony stuff for GPS neophytes that don't want to invest in more sophisticated GPS gear.
 


Title: Re: Anybody geotagging?
Post by: Dierk on March 08, 2007, 04:28:06 AM
I am currently gathering more info on the photoGPS but ATM lack definite word on several aspects, e.g. support of RAW. It looks like JOBO's device will support RAW but I still wait for the final word; flash use will be dealt with, at least the devlopers spoke about it. On both accounts [if they turn out to be 100%, not just the relatively stable 80% now] photoGPS beats all other software and hardware solutions on the market. It will already do so on account of getting place names into files. Power consumption, BTW, is one of the main goals for the developers. As for GPS chip, it seems to be the SiRF III.

Take all this with a grain of salt [see first sentence].

[Edit]
Just talked to JOBO again. photGPS supports RAW files via an XML sidecar; like most other companies they do not want to be held reliable for any file corruption, hence do not write into RAWs directly.
I guess those interested will have seen the PMA-video on Imaging Resource with the interview on the photoGPS. I won't rehash anything more from that.


Title: Re: Anybody geotagging?
Post by: peterkrogh on March 10, 2007, 08:54:59 PM
Dierk,
This thing looks pretty cool.
As I have been playing around with direct GPS data writing on the Nikon, I have come to appreciate that it may just be a better practice to track waypoints than to direct sync, at least until we get GPS built in to each camera.  Multi-camera usage and no signal areas could be addressed by the waypoint approach.

The XML sidecar approach is reasonable, as long as there is a way to get the data into a DAM solution, and durably attach it to the image file.  Which brings up...

As part of the DAM functionality, we also need an easy way to strip just the GPS data.  Clicking on the GPS data in Lightroom, and having Google Earth take me to my driveway was a little unnerving in some ways. 

I assume we'll all get used to it, in the same way that cell phone functionality was disconcerting the first time it intruded on a camping trip.  Later, that "intrusion" came to seem nearly indispensable, for any number of reasons.

Peter


Title: Re: Anybody geotagging?
Post by: Dierk on March 11, 2007, 01:36:23 AM
You are right, under some circumstances embedded GPS data are problematic. That's the trade-off of information gathering: anything that helps us may help some government body or criminal. OTOH, when I sent photos out I have everything in hand to strip unwanted data [particularly since MediaPro's very annoying bug about EXIF/GPS data in regard to Convert is still there].


Title: Re: Anybody geotagging?
Post by: peterkrogh on March 11, 2007, 07:28:18 AM
What's that bug?
Peter


Title: Re: Anybody geotagging?
Post by: Dierk on March 12, 2007, 12:36:36 AM
EXIF/GPS data do not always arrive in my JPEG and TIFF conversions although I tagged the option to preserve them.


Title: Re: Anybody geotagging?
Post by: peterkrogh on March 12, 2007, 07:41:15 AM
Dierk,
Have you been able to figure out a pattern on the dropped data?
Peter


Title: Re: Anybody geotagging?
Post by: Dierk on March 12, 2007, 07:59:47 AM
No, not yet.

When I started to answer you this morning, I went into MP to recreate the steps [university education is hard to beat out of me]. To my big surprise it worked this time. That's why I had to change to 'not always'.


Title: Re: Anybody geotagging?
Post by: David on September 27, 2007, 08:22:28 PM
Hi all

Geotagging with Mac OS X

Here is how I do my geotagging on my Intel duo core iMac and it works well

Hardware: Garmin eTrex Vista HCx (USB connection)
Software:

1) Download tracklog from my GPS using LoadMyTracks   (http://www.cluetrust.com/LoadMyTracks.html)
2) Ingest the photos with ImageIngester - I could not get ImageIngester to read the .gpx track log)
3) Merge location info into EXIF header using GPSPhotoLinker http://oregonstate.edu/~earlyj/gpsphotolinker/
4) The rest of the DAM workflow

The iMac and LoadMyTracks recognizes the eTrex Vista (although none of the Garmin map software works on the Mac).

Hope this helps someone

David


Title: Re: Anybody geotagging?
Post by: David on October 01, 2007, 06:02:14 PM
Hi all

Geotagging with Mac OS X - also can use Image Ingester

Here is how I do my geotagging on my Intel duo core iMac and it works well

Hardware: Garmin eTrex Vista HCx (USB connection)

Software:

1) Download tracklog from my GPS using Image Ingester new beta version
2) Ingest the photos with ImageIngester (there is a slight difference btn LoadMyTracks .gpx files and II .gpx files)
4) The rest of the DAM workflow

The iMac and LoadMyTracks recognizes the eTrex Vista (although none of the Garmin map software works on the Mac).

Hope this helps someone

David


Title: Re: Anybody geotagging?
Post by: AndreasWalbert on January 03, 2008, 04:25:59 AM
I use a small outdoor-gps unit from Garmin, the etrex.

Advantage: Regular GPS-functionality is built-in (just in case you get lost  ;))

To transform the native-format into gpx and read it from the unit, I need
1. Serial Cable
2. http://www.gpsbabel.org/ (open-source and very useful for GPS-file-operations)

Geocoding:
Also there is a useful (and free) tool from Google available: http://code.google.com/p/gpicsync/

It can do the transformation on RAW and DNG (of course also with jpg).
It writes either just in EXIF or in EXIF and IPTC

One word regarding precision:
This is over-estimated.
How precise is the reading you get from a TOPO50-map?
In the field 50 m are just nothing, especially as e.g. streets are not shown in their real size.

Also precision of the GPS-units is going to increase, once Galileo (European version of GPS) is activated, as you will be able to get a reading from both systems: GPS and Galileo. This will be helpful especially in narrow city-canyons.

In my opinion, time-stamping is precise enough.
With the eTrex you are able to adjust the tracking mode to either a time-difference or a movement (coming back to the plane).
But how long does it take you to take a picture? How far do you really move within 30 s in the field?
I actually work with steps of roughly 60 s. When I synchronize, I find out, that about 90 % of all pictures fit into this scheme...

There are lists available which show Countries in dependency from GPS-coordinates.
We use this on www.castogo.com for indetifcation of the Country of uploaded and geo-tagged media.

Hope, this was useful.

Greetings
Andreas



Title: Re: Anybody geotagging?
Post by: Don B on February 12, 2008, 03:17:09 PM
Adobe Online Forums has a good discussion about geotagging:  http://www.adobe.com/support/forums/?ogn=EN_US-gntray_comm_forums
Click on "Lightroom" in the second column> 4th line from the top--click on "forum search"> and type in "geotagging" in the box "What to search for".


Title: Geosetter
Post by: gsvenningsen on May 25, 2008, 04:59:11 AM
Hi,

For those of you who would like to geotag your RAW-files through XMP sidecar files, I would recommend to take a look at the GeoSetter software http://www.geosetter.de/en/ (Freeware, Windows only). Just remember to check the "Save data in XMP sidecar files" for your RAW-file type.

One can set the location manually from Google Maps/Satelite images, or from a GPS-tracklog synchronized with the image Exif time. The software has a very nice interface with Google maps, on which it can show track-logs and waypoints. Furthermore it can automatically fill inn the IPTC location fields (Country, State, City, etc), available from certain public databases, when the geotag has been set.

Best Regards
Gaute


Title: Re: Anybody geotagging?
Post by: billcheal on May 27, 2008, 04:23:48 PM
I capture the GPS Data using a small logger and then add it to the image when I import them. I use a Canon 40D and capture both the RAM and JPG images.  I have found Downloader Pro by Breeze allows me to rename the files, add keywords and add the GPS data all in one step. Best of all it adds XMP sidecar files to the RAW images and doesn't touch the RAW file, other than to change the file name.
Downloader Pro wants the GPS data to be in the GPX format. If your logger does not have the option for this format, you will need to convert it using someones software.

Bill


Title: Re: Anybody geotagging?
Post by: gsvenningsen on May 28, 2008, 06:21:08 AM
I capture the GPS Data using a small logger and then add it to the image when I import them. I use a Canon 40D and capture both the RAM and JPG images.  I have found Downloader Pro by Breeze allows me to rename the files, add keywords and add the GPS data all in one step. Best of all it adds XMP sidecar files to the RAW images and doesn't touch the RAW file, other than to change the file name.
Downloader Pro wants the GPS data to be in the GPX format. If your logger does not have the option for this format, you will need to convert it using someones software.

Bill

Bill, I have tried Downlowader Pro, and I agree that it is a simple and fast way to geotag. However, there are certain issues that Downloader Pro doesn't handle very well. What if you forgot your GPS, or it didn't have satellite fix? What if the tracklog is not correct?

This is where Geosetter has a strong advantage. One may use the tracklog, or geotag manually with Google Maps. And you may even change the geotag on images that was erroneously tagged from the tracklog. One can choose to save the geodata as a seperate XMP sidecar file (RAW) or in the image file (RAW, JPEG).


Title: Re: Anybody geotagging?
Post by: Don B on September 29, 2009, 06:31:27 PM
Canon Wireless Transmitter & Garmin gps: Expensive, but works great!
I have two 40d's, and attached the WT to one, with a short usb from it to the Garmin.  The gps is powered by the WT's battery.  The only caution is to set the "Power Off" to "Never".  Otherwise, the gps will run off of its batteries, and the camera has to spend time reconnecting in order to take a photo.  I leave the units on all day, with no issues.  (Extra batteries would be a good idea, though.)

After importing into Lightroom (1 & 2), clicking on the gps metadata area takes me directly to Google Earth, to the precise location.  The camera's metadata shows the coordinates and the altitude, but I've not found the altitude listed in LR's metadata.  If anyone has any ideas, it would be appreciated, as I remember some discussion elsewhere about complete gps information being included in LR's list.  Even if the gps is set to feet, the altitude still appears in the camera in meters.  If anyone has a fix for this, it would be appreciated.

Don