My personal approach: when I map I routinely use three sources in parallel: survey, GPX track, Mapillary images, satellite photos (picking the one with the most up-to -date pictures in the area, and aligning them to the Italian PCN2006 pictures, which are by our experience the best-aligned pictures available here). As a consequence (I am not always consistent, to be honest) I would have something like "source=survey; GPX tracks; Mapillary; Esri Images aligned with PCN2006" But my mapping is often not anything near to armchair mapping, I am using the images in addition to the other tools. I would not consider the fact that sattellite images are used, on its own as an indication that the date need to taken with caution.
On Tue, 10 Mar 2020 at 15:54, Sören Reinecke <tilmanreine...@yahoo.de> wrote: > Yes, I thought also about this and planned it to integrate in my concept. > > > -------- Original Message -------- > Subject: Re: [OSM-talk] Announcing Daylight Map Distribution > From: Joseph Eisenberg > To: Sören Reinecke > CC: Volker Schmidt ,talk@openstreetmap.org > > > My understanding is that the common way to describe armchair mapping, > based on aerial imagery, is to identify the imagery source. So I often > write: > > Changeset Comment: "Added and adjusted streams and rivers near Oksibil > with ESRI" > Changeset Source: "Esri world imagery" > > This makes it clear that I used Esri imagery to map the streams and > rivers, right? > > - Joseph Eisenberg > > On 3/10/20, Sören Reinecke via talk wrote: > > Hey > > > > some ideas about identifying such changes: > > > > > > Example changeset comment where a mapper did armchair mapping: > > Data updated, added amenity=restaurant > > #armchair > > > > In addition if the mapper works for a company: > > # > > e.g. #facebook > > #amazon > > #microsoft > > #apple > > > > Example changeset comment where a mapper did a survey and added data as > > (s)he saw it (from the ground): > > #survey > > > > > > > > This way we can organize our changes and Facebook and other companies and > > the community as well know how to validate and can distinguish changesets > > from another. I could create a wikipage where we think about this > "changeset > > governance" > > > > Cheers > > > > Sören Reinecke alias Valor Naram > > > > > > -------- Original Message -------- > > Subject: Re: [OSM-talk] Announcing Daylight Map Distribution > > From: Volker Schmidt > > To: talk@openstreetmap.org > > CC: > > > > > >> > >> > >>> Fixing stuff in OSM purely from imagery may not be good. > >>> > >>> A local mapper who sees something may add it before any satellite > imagery > >>> has it. > >>> > >>> If you then 'fix' this back to the satellite imagery you will have > >>> committed an error, > >>> and that error may dissuade our most important resource from ever > making > >>> any further changes- the local mapper. > >>> > >>> Be very careful! > >> > >> > >> I second this last line ! > >> > >> I am observing an influx of mixed-quality remote edits from Amazon > >> Logistics in my area. > >> I expect this Facebook operation to produce much more changes or > potential > >> changes (=suspected errors). > >> What we need for both cases and similar ones in the future is a way of > >> being able to identify such changes, which by their nature will be > >> armchair-mapping efforts. > >> I do not have a specific proposal, but I would appreciate a tool that > >> helps me, as local mapper, find these edits, and, more importantly we > >> need a new approach to organise digesting these massive distributed > >> armchair-mapping interventions on OSM data. > >> I don't realistically think that banning these activities is good for > OSM. > >> Not dealing in a systematic way with it at all presents, however, a big > >> risk of deteriorating the map for two reasons: > >> (1) bad armchair edits by Amazon and Facebook (and others) > >> (2) demotivating non-armchair mappers > >> > >> I repeat I do not have a proposal how to handle that. My main concern is > >> that the required work for locally checking even only those edits that > >> need checking (I am assuming that at least FB has good algorithms to > sort > >> out the dead-certain corrections beforehand. I am more sceptical with > >> Amazon's changing local access tagging to, essentially, "yes" everywhere > >> they have delivered something by delivery van. I came across a good > number > >> of them, and in most cases they were at least dubious) > >> > >> Volker > >> (Padova, Italy) > > > >
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