2015-03-12 12:29 GMT+01:00 Janko Mihelić <jan...@gmail.com>: > I think this should be resolved with lots and lots of photos, which the > community then segregates into classes. Smoothness on asphalt is something > entirely different than smoothness on sand, or smoothness on ground.
I believe the tag "smoothness" doesn't fit generally for sand surfaces, but asphalt and ground could easily use the same metrics / definitions. Cheers, Martin
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