[HOT] Fwd: [OpenStreetMap] Alternative imagery project 2102

Chad Blevins cblevins at usaid.gov
Mon Nov 7 14:17:57 UTC 2016

Hi everyone,

Thanks for the note, I created task 2102 and also provided the
additional imagery service.  Unfortunately certain areas of the custom
image service are offset from Bing and existing OSM data.  For this
reason I purposely didn't load the custom service into the task, but
offered it in the instructions to supplement clouds, etc.  These tasks
are designed to get new mappers involved with OSM.  Offset imagery
significantly raises the bar of entry and can introduce data quality

I've since noticed areas with significant change (buildings, trees,
etc.) between the two images.  The service I provided is several years
newer than Bing.  This highlights one major challenge with introducing
new imagery in OSM.  It would be great if traced features were
automatically tagged with the date/year of the service used.

Before creating a custom service I check Bing for date/year, cloud
cover, and quality.  If Mapbox isn't a good supplement then I search
for other scenes from the DG archive, and do my best to find a recent
cloud free scene that aligns with Bing.  I'm open to suggestions on
the best way to proceed.


> On Nov 7, 2016, at 7:21 AM, Blake Girardot HOT/OSM <blake.girardot at hotosm.org> wrote:
> Hi Joost, Mike, Daniel,
> Joost is of course correct. In looking at the project in the TM, it is
> not clear which imagery should be preferred for mapping, it might be
> on purpose the other imagery is not in the imagery field.
> I sent an email via OSM to the project creator to see if we can
> clarify the instructions a bit and put the other imagery in the
> imagery field if it should be used.
> Thank you for pointing it out Daniel.
> Regards,
> Blake
> ----------------------------------------------------
> Blake Girardot
> Humanitarian OpenStreetMap Team
> skype: jblakegirardot
> HOT Core Team Contact: info at hotosm.org
> On Mon, Nov 7, 2016 at 11:32 AM, joost schouppe
> <joost.schouppe at gmail.com> wrote:
>> That shouldn't be necessary though.
>> When you set up a task in the tasking manager, there is a tab to set the
>> background imagery. Doing this ensures the custom imagery is loaded as
>> default in ID. I don't know who managed the task, but they should be
>> informed that this is a really useful thing to do.
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