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 http://www.imagico.de/ _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
