Even if image galleries are forbidden on SourceForge, it seems to me that galleries of stochastic morphological operators are allowed on SourceForge, so the following image is an index into the stochastic morphological operators (SMO's) which were used to generate the various textures.
The stochastic operators are licensed under the GNU Free Documentation License to the extent that this is possible (but most people won't be redistributing them, anyway). The textures which you can generate from them cannot be licensed, as far as I can tell (except for specific instances), but I am not a lawyer. Anyway, if I'm wrong about the licensing, I release these textures into the public domain (or give permission for any use in the case that is not possible).