find below a few selected, excellent tutorials with the GIMP that will teach interested potential "image manipulators" some basic techniques.
Everyone interested e.g. in assembling cylindrical texture maps from Cassini photos, should know these things before starting.
To get some first feedback, I have asked ElChristou to comment about that selection. This is presumably quite useful for others. If YOU want to make comments as well, please DO SO!
Your impressions might get others interested and some fun communication and joint learning experience may evolve from it...
Here are the URL's along with ELChristou's comments [pink]:
quite utile, easy to understand
I can not really imagine what you do with this option (in the map treatment)
http://www.gimp.org/tutorials/Changing_ ... d_Color_1/
Yes using Alpha channel is always very utile
http://www.gimp.org/tutorials/Changing_ ... d_Color_2/
This tool is not so easy to use... it's hard to control the selection with a mid tone image...
Yes gradient brush is super utile (have you used it in the bottompart of Titan?) and playing with offset is evident to work on the edges of the map.
The two here are complementary, newbies will need to make some test with selective gaussian blur.
I'm not sure of the utility of this one, on photoshop for example with 2 layers and some color/balance and luminosity/contrast you get the same more quickly...
This one is just an image composing... just good for a layering exercice
Yes, very good and very professional... good to understand the purpose of using LBA. The edge detection is only utile for very specific images... not sure (but I never test) of the result on a map moon (lot of crater), it will be to sharpened...
ElChristou wrote:With such tutorials beginner can understand quickly these topic... but they will need exercices.
Indeed, each one have to make his experience, good result like yours won't come immediatly; but I don't really worry for this part.
If needed, I can help with newbie question on those topic.
In many instances, I tend to agree with ElChristou, but not in everyone of his comments, of course . Perhaps at a later stage, it might be useful to discuss our different views.