Yantisa Akhadi <yant...@gmail.com> writes: > To add more challenges to this issue is imagery offset > <https://wiki.openstreetmap.org/wiki/Imagery_Offset_Database>. The value > can even be varied from tiles to tiles, that we often need to shift the > object a couple of meters away. In a remote area, where there are no GPS > traces as a reference, satellite imagery is often the only reference even > when possibly it was a couple of meters off.
Certainly that is a challenge. But, once the datum is defined clearly, then it is work to figure out, but not a question of ambiguity as to what is desired. I am unclear on whether most imagery offset issues are due to imagery being in a datum other than modern WGS84 (and not transformed), or just due to errors. In Massachusetts, US, it seems most of the imagery sources are pretty well aligned. But this cries out for actualy checking better! _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
