[Talk-ca] High resolution Air photos for New Brunswick

[James]

Sweet! I've been looking at a few places as well and it's very good with
minimal real world shift!
Very nice imagery in remote areas too!

On Fri, Sep 15, 2017 at 10:15 AM, Bernie Connors <bernie.connors at unb.ca>
wrote:

> James,
>
>       I have not undertaken an overall assessment of the Esri World
> Imagery basemap.  However, I was responsible for the QC of the most recent,
> high resolution, urban aerial photography that was collected in 2015 and
> 2016 in several dozen NB communities.  This photography was collected by
> Pictometry for the provincial government and its primary use is for
> property assessment.  I have reviewed the reports for the ground control,
> aerial triangulation and orthorectification.  The province opted to
> purchase the AccuPLUS orthophoto product from Pictometry which has a higher
> level of human intervention in the selection of the images that are used to
> prepare the orthophotos.  This results in orthophotos with a minimum of
> "building lean".  When compared to the provincial GIS datasets available
> from GeoNB [1] the alignment was very good.  Additionally I have heard from
> several municipal GIS managers and they are also very impressed with the
> horizontal accuracy of the Pictometry AccuPLUS orthophotos.  If I had to
> put a number to the horizontal accuracy of the Pictometry orthophotos in NB
> I would say it is better than 15 cm.
>
>       The province of New Brunswick participates in Esri Canada's
> Community Maps Program.  Through this program we contribute GIS data
> (orthophotos and vectors) that are used to update the Esri World Imagery
> basemap and the Esri World Topographic basemap.  Many other communities
> across Canada also participate in the program [2].  If these communities
> are contributing their municipal orthophotos to the program it is safe to
> say that the Esri World Imagery basemap is very accurate within these
> communities.
>
> [1] - GeoNB Data Catalogue - http://www.snb.ca/geonb1/e/DC/catalogue-E.asp
> [2] - Esri Canada Community Maps participants -
> http://maps.esri.ca/updates/tracking/
>
> Bernie.
>
> On Fri, Sep 15, 2017 at 10:35 AM, James <james2432 at gmail.com> wrote:
>
>> How well is the ESRI Imagery aligned with the real world (in General)?
>>
>> On Fri, Sep 15, 2017 at 9:32 AM, Bernie Connors <bernie.connors at unb.ca>
>> wrote:
>>
>>> Hello all,
>>>
>>>
>>>
>>>                 My apologies if this has already been mentioned on this
>>> list.  The Esri World Imagery basemap is now available as a background
>>> image for OpenStreetMap editors.  In New Brunswick the provincial
>>> government has contributed hundreds of square kilometres of high
>>> resolution, urban air photos to the Esri World Imagery basemap.  There
>>> are thousands of buildings and other features that require editing so they
>>> match the newer, hi-resolution imagery in the Esri World Imagery basemap.
>>> This area in Fredericton is a good example [1] (start an edit session and
>>> choose the Esri World Imagery background).  I posted to my blog with a
>>> few more details [2]
>>>
>>>
>>>
>>> [1] - http://www.openstreetmap.org/#map=19/45.96139/-66.64951
>>>
>>> [2] - http://geobern.blogspot.ca/2017/08/esri-world-imagery-in-o
>>> penstreetmap.html
>>>
>>>
>>>
>>> Bernie.
>>> --
>>> Bernie Connors
>>> New Maryland, NB
>>>
>>> _______________________________________________
>>> Talk-ca mailing list
>>> Talk-ca at openstreetmap.org
>>> https://lists.openstreetmap.org/listinfo/talk-ca
>>>
>>>
>>
>>
>> --
>> 外に遊びに行こう！
>>
>> _______________________________________________
>> Talk-ca mailing list
>> Talk-ca at openstreetmap.org
>> https://lists.openstreetmap.org/listinfo/talk-ca
>>
>>
>
>
> --
> Bernie Connors
> New Maryland, NB
>



-- 
外に遊びに行こう！
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk-ca/attachments/20170915/d7747b00/attachment-0001.html>