https://bugzilla.gnome.org/show_bug.cgi?id=619314 contains a patch and quick test xmls for much improved samplers gegl-sampler-upsize.c and gegl-sampler-upsharp.c. To run the xmls: gegl file.xml -o output.png Upsize implements the Locally Bounded Bicubic (LBB) method. It is a good general purpose method for image transformations which don't downsample much (e.g., enlargement, rotation). Upsharp implements Nohalo ("no halo") with LBB finishing scheme. Recommended for natural images, especially slightly blurry ones, Nohalo mildly straightens and sharpens edges. It is not as good as LBB for text-like images. IMHO, these are the best gegl interpolatory resamplers currently programmed for GEGL. (For "classic video game" images---think vintage Mario Bros---a smoothing, non-interpolatory resampler, like B-Spline smoothing or the (future version of) gegl-sampler-upsmooth.c, may be preferable. For downsampling, for example thumbnail production, an exact area method is preferable.) Nicolas Robidoux _______________________________________________ Gegl-developer mailing list Gegl-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gegl-developer
