I don't understand
what selection?
what is "Mosaic Tile Helper"?
what dots?
Sorry if I look like a fool, I need a more step by step explanation, or may be it's a bit too for me


Another great one, I love it


Thank you
A different type of tiles, but yes! Excellent as well, it also shows a very good versatility of results with your method

Haven't seen RobA in a while; anyway, he posted a cool script-fu many years ago, Patrice. Need to read through his thread to understand how to use it. It requires a selection before running it. I use various ways to create the selection but lately, I've been using G'MIC's Convolve present and use the select by color GIMP tool to create the selection of the image I'm using.

viewtopic.php?f=9&t=2714&hilit=mosaic+tile+helper#p34988

Thank you so much Lyle!
Now I have hope I'm gonna to study that
Again

I have not forgotten this thread! I am in Greece with my small travelling laptop and a slow wifi connection. (Earthquake proof buildings have a lot of steel which blocks the signal.)

The experiment with contrast masks within luminosity masks.

IMG_7661. Scaled 50% width & height.



Here is the Layers Pallette, where Lum 1 copy has been desaturated, inverted and a small amount of Gaussian blur added. The mode has been changed to soft-light. This reduces contrast in the darkest parts.
Lum 4 copy, desaturated and changed to soft-light mode to increase the contrast in part of the sky and the sea.



IMG_7661_1 is the result. This is an experiment and I need other people to tell me if this could be a useful technique!

Happy vacation David!
About your contrast Mask in luminosity masks seem to work perfect. I see the result really nice and balanced.

Happy holidays

Useful... It all depends what you are searching for.
Thus take my comment as a point of view > not knowing what you are searching for with this technique

What I saw is that a lot of details/textures are washed out, like the trees' bark and the cliff, color artifacts appear everywhere, especially on the edges like the yellowish plant at the bottom left or the trees' leaves. It looks like you wanted to do patches of "cartoon-ish" style without the full effect of a cartoon style (I don't know if I explain well).

In the end, if it was the effect you were searching for, why not, that might be a useful technique you might want to keep.

@PixLab,

Thanks for your comments.
What I was trying to achieve was to modify contrast within one masked layer of the luminosity masks without affecting other layers.
The previous example was grossly overdone.

Here is another try for your comments.

IMG7862_1

Way better IMO
(I would add a tiny bit of contrast, but it's just me today or my livingroom receive too much light from that very sunny day and affect my monitor )

Back from Greece. I have to catch up on my homework!

I have continued the experiment of using contrast masks within luminosity masks on these three images.

IMG_7900. Used desaturated copies in soft light mode (at 50% opacity) on layers 4 and 5 to increase contrast in the brightest areas.



IMG_7903. Layers 2 & 3 duplicated, desaturated, inverted and a small amount of Gaussian blur (3.5px). In soft light mode at 50% opacity.



IMG_7904. Similar process.

These two photos I have used only the luminosity mask plug-in.

IMG_7865.



IMG_7889.

David, I like your improvement, yours masks work perfect.

IMG_7907. Perspective adjustment.



IMG_7919. Contrast masks applied to layers 1&5 of luminosity masks.



IMG_7921. As IMG_7919.