My Experiments On GMIC Testing filters: Simple Graphics (now 14)

[dinasset]

The last image you posted has much better tiles. Only darker separators, but tiles well defined.

[dinasset]

You may try also "Basic", as Issabella does from time to time.
Your source image comes out not bad.

chick-6652163_960_720_DIEGO-using-BASIC.jpg (1.73 MiB) Viewed 371 times

[Issabella]

Leftyleo, much better your last test.

[Issabella]

[leftyleo]

I found a few things :

The layer "preprocessed to overlay light areas" says mode = dissolve ..i made it 30%
that helped and then i said OH! .. and changed the mode off dissolve and set it to Overlay and
back to your 50% and that that looks better
(the to overlay is first image then the dissolve to 30%)

the Dissolve to 30% looks like Issabella's .. for some reason the Overlay layer is tagged as overlay when the mode is set to dissolve ..i just lowered the opacity and matched Issabella's

My version of GIMP / GMIC must be slightly different / older

Also i am currently running GIMP 2.10.25 with G'MIC-Qt for GIMP 2.8 (2.9.9)
- due to the linux mint 19 which is based on Ubuntu 18.04
i cant seem to get GMIC for 2.10 That could be part of the problem
i need to update this laptop

[dinasset]

Leftyleo, excellent suggestion !
I changed the mode to OVERLAY and opacity to 25.00.
Much better look.

I send to you both the updated version.

[dinasset]

Wanted to post some outcomes using the updated version, as proposed by Leftyleo (thanks!).
Images of flowers.

2022-03-21 08-01-1009f837afadbcda442c502c53f9cacac2_Q as a Mosaic with Texture Coloree (lines look regular).jpeg (1.24 MiB) Viewed 350 times

2022-03-21 08-01-4534a79ea26e33d0f2bae7fe717cd45145-square as a Mosaic with Texture Coloree (lines look regular).jpeg (1.15 MiB) Viewed 350 times

2022-03-21 08-02-25131228hinh-nen-nhung-bong-hoa-suong-rong-dep-mat-nhat as a Mosaic with Texture Coloree (lines look regular).jpeg (1.16 MiB) Viewed 350 times

Much much better look of the tiles !

[dinasset]

Here the same images using option "Basic" (my preferred one).

2022-03-21 08-08-4209f837afadbcda442c502c53f9cacac2_Q as a Mosaic with Texture Coloree (lines look basic).jpeg (964.27 KiB) Viewed 350 times

2022-03-21 08-08-5834a79ea26e33d0f2bae7fe717cd45145-square as a Mosaic with Texture Coloree (lines look basic).jpeg (924.67 KiB) Viewed 350 times

2022-03-21 08-09-14131228hinh-nen-nhung-bong-hoa-suong-rong-dep-mat-nhat as a Mosaic with Texture Coloree (lines look basic).jpeg (897.63 KiB) Viewed 350 times

[muffinn]

Thanks for the links - very helpful

[Issabella]

The lines of the mosaic are strongly defined.
With the current update, my results.

[Issabella]

[Issabella]

But I miss softer mosaic lines. (sorry)

[Issabella]

Going back to the previous look.

[Issabella]

I like this update of Mosaic

[Issabella]

[Issabella]

[dinasset]

After this spectacular anthology by Issabella, my modest 3 pence.
post-process copying on top the Base layer set to Linear Light

2022-03-21 18-45-08photo-1439778615639-28529f7628bc as a Mosaic with Texture Coloree (lines look basic)_PPbaseLL.jpeg (821.14 KiB) Viewed 364 times

same as above

2022-03-21 18-49-28photo-1440589473619-3cde28941638 as a Mosaic with Texture Coloree (lines look basic)_PPbaseLL.jpeg (829.89 KiB) Viewed 364 times

standard outcome

2022-03-21 18-53-31photo-1441913996206-44216f6eefd7 as a Mosaic with Texture Coloree (lines look basic).jpeg (942.47 KiB) Viewed 364 times

[dinasset]

Another standard outcome.

[Issabella]

Dinasset.
I see this effect to be espectacular.

[Issabella]