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TECH TEST 0403: GEOTAGGING IMAGES

DOC AUTH: birch

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1.

Description added to image with imagewalker
Geotag added with opanda powerexif

refs: Imagewalker
      OPANDA IEXIF plugin


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< embedded in frog image >

HELLO TIM. I AM A FROG FROM THE PLANET KUSBAINE.
DO YOU HAVE ANY PUDDING ?

To geotag this image, you have to add the following EXIF gps headers
using , in this case , Opanda Power Exif editor

GPS Version ID = Version 2.2
GPS Latitude Ref = North latitude
GPS Latitude = 39°54'56"
GPS Longitude Ref = East longitude
GPS Longitude = 116°23'27"
GPS Time Stamp = 18:07:37 UTC
GPS Date Stamp = 2003-11-23 UTC

Further testing shows do not need GPS Time Stamp or GPS Date Stamp




if you have added panda iexif plugin to YOUR web browser under windoz,
you can right click on image to :
1 geolocate image in googoo maps, or
2 view the EXIF / GPS / IPTC RMF ( Headline , Caption ) data

The caption description tag added in imagewalker is visible but not
particularly legible due to no scrolling of text field.
Recommend imagewalker for caption display as it is far more usable


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2.

Google geotag added with iTag

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Using ITAG to geocode with google earth coordinate system does not
write information as per opanda gps tag


Above image was further edited with panda editor to allow image display
in goomaps using panda plugin





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3.

Troubleshoot iTAg tag syntax

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RED PIN

Geocoded in itag from clipboard copy-paste of google earth placemark ONLY

test1: Right click on saved image and bring up opanda iexif view, reveals
following data has been written

[GPS]
GPS Version ID = Version 2.0
GPS Latitude Ref = North latitude
GPS Latitude = 34°31'17.22"
GPS Longitude Ref = East longitude
GPS Longitude = 47°38'17.04"


test2: Right click on saved image and try to geolocate in google maps
       using "locate by gps option" of opanda iexif
>> Generates error message:
   - The image includes incorrect GPS information and it cannot be located.
   - If you want to add or modify GPS data, please use ...



 - end of red pin test -


GREEN PIN

Geocoded in iTag as per red pin

GPS info encoded

[GPS]
GPS Version ID = Version 2.0
GPS Latitude Ref = North latitude
GPS Latitude = 34°31'18.45"
GPS Longitude Ref = East longitude
GPS Longitude = 47°38'22.45"


Still not recognised by iEXIF plugin for display in goomaps

Switching to editor view  shows :


	Entry		Meaning		Tag	Type		Count
[GPS]
GPS Version ID = 	Version 2.0	0000	BYTE			4
GPS Latitude Ref = 	North latitude	0001	ASCII			2
GPS Latitude = 		34°31'18.45"	0002	SRATIONAL?		3
GPS Longitude Ref= 	East longitude	0003	ASCII			2
GPS Longitude = 	47°38'22.45"	0004	SRATIONAL?		3


Comparing this to opanda supported geotagged image shows that data type for
GPSLat and GPSlong should be RATIONAL not SRATIONAL?
Edited these two fields to read RATIONAL  and saved image ( still as green.jpg )


   panda plugin reads exif tags : SUCCESS
   panda plugin can geolocate into googlemaps : SUCCESS




  - end of green pin test -