[Talk-GB] Possible use of OS triangulation stations to determine aerial imagery offset
davefoxfac63 at btinternet.com
Thu Sep 1 23:05:56 UTC 2016
Could you clarify if by merge/import you mean it to be performed
manually or programmatically?
Personally I think manually is the way to go, possibly as a Quarterly
Project asimilar to the schools update. Local knowledge will definitely
produce more accurate results.
I'd use P2's Task to save all that panning around.
Have you been in contact with anyone from the Trigpointing website?
On 01/09/2016 17:16, Greg wrote:
> Hi all,
> Since my last email, I've analysed the relationship between the OS
> triangulation station data and OSM 'man_made=survey_point's in Great
> Britain. You can read about this on my wiki page
> I believe it may be possible to import/merge this data at some point in
> the future so I'd be grateful if you could take a look.
> I have also converted the data into a GPX file with metadata that can be
> understood/displayed by JOSM to allow users to more accurately determine
> the offset of aerial imagery. This can be obtained here:
> On Fri, Aug 19, 2016, at 08:08 PM, Greg wrote:
>> I'm pleased to say that I have had confirmation from Ordnance Survey
>> that their triangulation station data can be used under the Open
>> Government Licence v3. I have documented this on the wiki:
>> I will try to look into making this data more accessible to the
>> community so that it can be used to more accurately determine the offset
>> of aerial imagery. I have experimented with this idea around the Rugby
>> area and it seems to work well.
>> I am also in the process of analysing the relationship between this data
>> and the large number of 'man_made=survey_point's already in the database
>> in order to determine whether it might be feasible/useful to
>> import/merge the data. It looks like similar data has been imported from
>> IGN in France. Of course I won't do this until it's been properly
>> Talk-GB mailing list
>> Talk-GB at openstreetmap.org
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