Hi Andrzej, yes, your original patch dem-align-6.patch implements bicubic-catmull and the faster replacement by Paul Breeuwsma does that as well.
Gerd ________________________________________ Von: mkgmap-dev <[email protected]> im Auftrag von Andrzej Popowski <[email protected]> Gesendet: Mittwoch, 24. Januar 2018 13:45 An: [email protected] Betreff: Re: [mkgmap-dev] DEM: performance with bicubic interpolation Hi, I have added more algorithms for testing, patch is attached. Patched mkgmap recognize following values for x-dem-interpolation: bilinear bicubic bicubic-spline bicubic-catmull bicubic-hermite I have prepared new set for testing: http://files.mkgmap.org.uk/download/408/interpolation2.7z For me bicubic-catmull looks like bicubic. Bicubic-spline looks inferior and bicubic-hermite gives weird results, maybe something is wrong. Still bicubic interpolation looks the best. -- Best regards, Andrzej _______________________________________________ mkgmap-dev mailing list [email protected] http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
