[OSM-talk] Decline in accuracy of capture date metadata in Bing imagery

Christoph Hormann osm at imagico.de
Tue Jul 25 16:57:51 UTC 2017

On Tuesday 25 July 2017, James wrote:
> Maybe you should stick to local mapping/survey the location to assess
> the image quality

Yes, obviously that is always the best option when possible.  But tell 
that to all the mappers who re-create buildings that show up in images 
although they have meanwhile been demolished or who put a lot of effort 
into correcting the course of rivers which have completely changed in 
the years since the image was taken.  Capture date metadata does not 
prevent such mistakes but it can help avoiding them.

This is ultimately more a convenience thing.  Usually it is possible to 
pinpoint approximately when an image was taken if you put enough effort 
into it - likewise for the DigitalGlobe images which have no recording 
date information at all.  But this is time-consuming work.

Christoph Hormann

More information about the talk mailing list