[Imports] Review Facebook road import/assisted mapping

[Christoph Hormann]

On Monday 08 May 2017, Stephan Knauss wrote:
>
> there had been very little feedback regarding the sample data
> Facebook provided:
>
> https://forum.openstreetmap.org/viewtopic.php?id=57942
>
> I invite others to have a closer look as well.
> The sample they had provided was not too bad. Some minor issues, but
> in general acceptable.

I have seen the discussion there as well as the samples shown and it is 
good to see some evaluation being done with on-the-ground knowledge.  
However as i have mentioned before i don't think an import can be 
properly discussed just based on sample data.  So i am still waiting 
for the complete raw data for the whole area of the import plan without 
manual post processing being made available for evaluation.

> Important is to point out systematic problems early, so they have the
> chance to adjust their process.

Systematic problems are often hard to separate from freak abnormalities 
if you only have a very small data basis to evaluate.  This is the most 
important conclusion i took from looking at the samples so far.

Another side note: On March 17 Kevin Bullock from DigitalGlobe announced 
they are working on a possibility to give mappers access to the same 
images used by Facebook for their process and according to the 
timeframe mentioned there this is likely not that far away.  This would 
certainly give a new perspective on the import plans on several levels.

-- 
Christoph Hormann
http://www.imagico.de/