[Talk-GB] Quarterly Project 2020Q1

[James Derrick]

On 06/01/2021 16:51, ndrw wrote:
> I propose mapping new-built housing areas. Bing imagery has recently 
> been updated (in most places, anyway) and is of decent enough quality 
> that mapping residential roads, parks and building outlines without a 
> survey is possible.

Bing has released much fantastic high-resolution imagery which shows 
many additional features, however it's worth noting that other providers 
such as Esri and Maxar have newer data in my area of Northumberland.

The challenge is imagery is often mis-aligned and offsets are always 
required across multiple imagery providers with the primary being 
downloaded GPX traces. Over Christmas I've armchair updated all of the 
construction=residential I've been cycle surveying over Summer and even 
with my own averaged GPSr traces, imagery offsets are a necessary PITA.

Hints in changeset comments, and source=* tags on buildings can help 
later alignment.


> These areas are often not covered by commercial products (even OS 
> tends to lag a bit) so OSM could be of immediate use to new residents 
> and delivery services.

Very true - a curious resident asking why I have a GPSr camera once 
enthusiastically shook my hand in excitement that they might have way of 
showing friends where they live! :-)

Even rough highway geometry and construction is a lot more useful than 
landuse=meadow.


James

James
-- 
James Derrick
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     I wouldn't be a volunteer if you paid me...
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