[talk-ph] new high-res images available from digitalglobe

[maning sambale]

Hi,

The Quickbird images are now available as a map background for OSM
tracing in some parts of Pangasinan!

The boundingbox below shows the approximate extent covered by the images:
http://www.openstreetmap.org/?minlon=120.331&minlat=15.9464&maxlon=120.602&maxlat=16.2202&box=yes

The images are a mixture of various QB images from 2006-2009.  We used
the default projection of the images so some areas may need manual
adjustment.

Here's some tips on how to use the imagery.

In potlatch:
1.  Select a desired area within the bounding box above.  Zoom in at
level 14 or higher (up to level 19).  Select the edit tab.
2. The Quickbird images should be displayed by default instead of
Yahoo.  If the images are not visible, select "Open options dialog"
(Checkmark Icon).  Add this url to the "Custom" map background:
http://dev.openstreetmap.org/~gravitystorm/imagery/philippines/!/!/!.png
3. If the map does not match with the roads, activate the show GPS
trace (G).  This should show uploaded GPS traces.  You can drag the
background image to align with the GPS traces by holding the
"Spacebar" key and dragging with the mouse.
4. edit, edit, edit.

In JOSM,
1. Get the the "Slippy Map" plugin. Preference >> Plugins. Restart JOSM.
2. Add this URL in the Slippy Map Plugin configuration:
http://dev.openstreetmap.org/~gravitystorm/imagery/philippines/
You can set the maximum level to 19. Restart JOSM
3. The slippy map layer should be activated when you download some
data within the boundingbox above.

I can't find any easy way to manually drag the background to align
with gps or osm data.  The "drag WMS background" doesn't work for
Slippy Map images.  A workaround would be:
1. Trace the images in a separate OSM data layer (layer 1).
2. Download OSM data and GPS traces in another layer (layer 2).
3. Select all data in layer 1 and drag them to match/align with layer 2.
4. Combine both layers.  Edit duplicates, errors, etc.

In Merkaartor,  I have no idea :).  Perhaps Merkaartor users can provide tips.

Please help in the preliminary tracing.  We can then look for
Pangasinan volunteers to add names and other POIs.

Big thanks to Andy of the famous OpenCycleMap for helping us.




On 10/25/09, maning sambale <emmanuel.sambale at gmail.com> wrote:
> Kai and all,
>
> Yes we have secured a space in the OSM-dev server.  I have been
> uploading the files for generation of a mapnik like tiles which
> everyone can use in any OSM editor.
>
> Almost halfway the uploading process.  Will keep you updated for progress.
>
>
>> One option to host the images might be on the OSM-dev server. It has a
>> fair
>> amount of space and can be used for projects to help expand OSM, so
>> hosting
>> aerial imagery from which one can trace for OSM seems well within its
>> intended purposes. It currently also hosts some out-of-copyright maps of
>> the
>> UK for tracing, which is similar in nature.  I guess it will depend a bit
>> on
>> how large the images are and under what conditions they are allowed to be
>> used, but it is worth asking the server admins for a dev-account.
>>
>> Another alternative could potentially be the new dev server Strato
>> donated
>> to the German OSM-chapter.
>>
>> Kai
>>
>
>
>
> --
> cheers,
> maning
> ------------------------------------------------------
> "Freedom is still the most radical idea of all" -N.Branden
> wiki: http://esambale.wikispaces.com/
> blog: http://epsg4253.wordpress.com/
> ------------------------------------------------------
>


-- 
cheers,
maning
------------------------------------------------------
"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
------------------------------------------------------