On Wed, Apr 27, 2016 at 10:03 AM, C R <cajhne@xxxxxxxxx> wrote: > I assume the reasoning behind using cubic as the default for all the scale > and transform tools is to cut back on the complaints of how slow GIMP is at > the moment, but the quality loss in the current cubic interpolation > algorithm is quite bad. > > Can we shift the default to No Halo or Lo Halo? > Also, it's probably safe to assume that if the user chooses an > interpolation type in the tool, they are saying something about the quality > of the results they are after vs speed. I think setting the value in one > tool should set the value automatically in other tools, and treat it as a > "global" value of sorts. I've pushed code to GEGL master that makes the resamplers called "linear" and "cubic" do a tiny bit more than just interpolation. These operations now do a (possibly sparse) box-filtering when scaling down instead of scaling up. Doing point sampling with interpolated values is probably not what a user expect "cubic" or "linear" scaling down to be anyways,. even if this is what it currently is. GEGL now does a 2x2 averaging of values for bilinear and a 4x4 sparse box filter averaging for cubic. Due to how this code uses whole pixels for averaging it might yield slightly sharper result than nohalo in many cases. _______________________________________________ gimp-developer-list mailing list List address: gimp-developer-list@xxxxxxxxx List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list List archives: https://mail.gnome.org/archives/gimp-developer-list
