I tried to apply the bilinear and bicubic interpolation, but the results are the same: visible differences between overlapping raster areas. Any more clue (Simone or Daniele...) ?
Piero Andrea Aime wrote: The way it looks it seems to me you're getting slightly visual differences due to nearest neighbour interpolation, in which a pixel is either "on" or "off". You might want to setup bilinear one as you're displaying data beyond its native resolution Cheers Piero Campa wrote: > > Hi all, > I'm adding raster overlays over an EPSG:4326 geographic base-layer. > What I do is letting the user draw a BBOX and then ask GeoServer for the > layer via WMS. > > The original rasters are GeoTiffs, while I download them as PNG. > Even though I don't have to reproject, you can catch (see attachments) > some little difference of the same portion of map but with different BBOX > in the WMS request. > I guess it is the PNG conversion... maybe. But I need the layer to support > transparency. > > I would like to know if there's a way to get the same exact results, or > not. > Thank you very much. > Piero > > http://old.nabble.com/file/p29641673/BBOX1.png BBOX1.png > http://old.nabble.com/file/p29641673/BBOX2.png BBOX2.png > The way it looks it seems to me you're getting slightly visual differences due to nearest neighbour interpolation, in which a pixel is either "on" or "off". You might want to setup bilinear one as you're displaying data beyond its native resolution Cheers http://old.nabble.com/file/p29737672/bil_1.png bil_1.png -- View this message in context: http://old.nabble.com/WMS-Overlay-Precision-Issue-tp29641673p29737672.html Sent from the GeoServer - User mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Geoserver-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
