Google's Photosphere

[G8DHE]

Does anybody know of any sources of additional information about Googles new Photosphere XMP namespace extension GPano ?
The info I have gathered to date is listed below, gleaned from data in existing images, but I've not been able to identify any formal information.

Code Select Expand

<?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?>
<x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="XMP Core 5.1.2">
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
<rdf:Description rdf:about=""
xmlns:GPano="http://ns.google.com/photos/1.0/panorama/"
GPano:UsePanoramaViewer="True"
GPano:ProjectionType="equirectangular"
GPano:PoseHeadingDegrees="112.0"
GPano:CroppedAreaLeftPixels="0"
GPano:FullPanoWidthPixels="4756"
GPano:FirstPhotoDate="2012-10-13T20:43:21.097Z"
GPano:CroppedAreaImageHeightPixels="1559"
GPano:FullPanoHeightPixels="2378"
GPano:SourcePhotosCount="34"
GPano:CroppedAreaImageWidthPixels="4756"
GPano:LastPhotoDate="2012-10-13T20:44:00.15Z"
GPano:CroppedAreaTopPixels="372"
GPano:LargestValidInteriorRectLeft="0"
GPano:LargestValidInteriorRectTop="0"
GPano:LargestValidInteriorRectWidth="4756"
GPano:LargestValidInteriorRectHeight="1559"/>
</rdf:RDF>
</x:xmpmeta>   
<?xpacket end="w"?>

I'm hoping to be able to include fields either in the exiftool _config file, or maybe get included as an XMP namespace in Exiftool itself, Phil ?

Always strikes me as a shame that the namespace URI can't actually be used as a URL for DTD itself.

[Phil Harvey]

Hi Geoff,

Thanks!  This is the first I've seen of this namespace.  I'll add what you have given me so far (it will appear in ExifTool 9.07).  Please let me know if you find out anything else.

There is no reason that they couldn't use a URL for the URI, but unfortunately this doesn't seem to be the practice.

- Phil

[G8DHE]

Brilliant Phil!  I'll keep you updated with any extra info I come across, I suspect there might be several other Tags possible, including differing ProjectionType values, "cylindrical" comes to mind but not seen or tried yet!

[Phil Harvey]

Thanks.  Don't worry about different ProjectionType values -- I'll just leave this as a simple string so you can write anything here.

- Phil

[G8DHE]

Phil, Goggle have now published the data see here https://developers.google.com/panorama/metadata/
there appears to be a few more fields that will need to be added!

[Phil Harvey]

Fantastic, thanks!  Gotta love it when someone actually provides documentation!

- Phil

[Phil Harvey]

Hmmm.  The specification doesn't mention 4 tags that ExifTool already defines:

LargestValidInteriorRectLeft
LargestValidInteriorRectTop
LargestValidInteriorRectWidth
LargestValidInteriorRectHeight

- Phil

[G8DHE]

Yup just been looking more closely myself, but the 4 fields were added by Googles own camera software! Duh......

[G8DHE]

Hopefully its just a work in progress ... maybe....

[hvdwolf]

New Information about the Google PhotoSphere specifications has been released:
https://developers.google.com/panorama/metadata/

It doesn't work yet in exiftool 9.08

[hvdwolf]

New Information about the Google PhotoSphere specifications has been released:
https://developers.google.com/panorama/metadata/

It doesn't work yet in exiftool 9.08

But it does in 9.09.

You are the greatest !

[Phil Harvey]

You are the greatest !