[Marble-bugs] [Bug 271430] New: Map display is blurred for OpenStreetMap and other raster maps
Milko Krachounov
exabyte at 3mhz.net
Thu Apr 21 16:31:14 CEST 2011
https://bugs.kde.org/show_bug.cgi?id=271430
Summary: Map display is blurred for OpenStreetMap and other
raster maps
Product: marble
Version: unspecified
Platform: Unlisted Binaries
OS/Version: Linux
Status: UNCONFIRMED
Severity: wishlist
Priority: NOR
Component: general
AssignedTo: marble-bugs at kde.org
ReportedBy: exabyte at 3mhz.net
Version: unspecified (using KDE 4.6.1)
OS: Linux
For OpenStreetMap, Marble downloads raster images of the maps that are offered
by the OSM server (probably those that are closest to the level of zoom of
Marble), and then has to resize them to fit the actual zoom level. This means
that the map image is blurred and ugly and in the latest version the
readability can also suffer for some zoom levels.
The maps provided by the OSM server are rendered wonderfully by Mapnik, but the
postprocessing done by Marble destroys them.
This is true for all raster map sources, such as OpenStreetMap and Osmarender.
It doesn't affect maps such as the atlas, the natural earth one, or the maps of
Mars, Venus and the Moon.
It would be very nice if Marble could provide exact zooms for those maps
(perhaps through a new projection mode?) so that they are not resized, or could
render the maps itself with the right projection, or could otherwise make them
sharp and comparable to those on OSM's website.
Reproducible: Always
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