To illustrate the effect of the samplers when ROTATING images, I put
together a comparative test. It shows the results of rotating a quite
sharp image of astronauts near the space station---if I remember
correctly---by 6.5 degrees with four GIMP methods, three GEGL methods
and three candidate GEGL methods for which patches are provided in

https://bugzilla.gnome.org/show_bug.cgi?id=619314

(The image is very sharp: I actually wonder if NASA sharpened it.)

The results, named one.png to nin.png, are found in the tar archive

http://web.cs.laurentian.ca/nrobidoux/misc/astronautsrotatetests.tgz

To know which method was used to produce each image (and get runtimes
for the GEGL methods), read the KEY text file.

Nicolas Robidoux
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