Mosaic

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12531

Thanks, level_0. Also, can't seem to break this binge. lol

ref: https://amraart.files.wordpress.com/201 ... ts-arm.jpg

https://www.flickr.com/photos/163034485 ... 13/sizes/o

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12531

Thanks, level_0. Also, can't seem to break this binge. lol

ref: https://amraart.files.wordpress.com/201 ... ts-arm.jpg

https://www.flickr.com/photos/163034485 ... 13/sizes/o

dinasset · **Posted:** Mon Mar 02, 2020 2:21 am **(#23)**

This last one is really superb !!!

level_0 · **Posted:** Mon Mar 02, 2020 2:43 am **(#24)**

dinasset wrote:

This last one is really superb !!!

I have no other words!

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12531

Inkscape's Jam is the best for that glossy look (and it adds dimension, too; 2 birds with one stone). Wish you could port Inkscape's bitmap filters/operations into GIMP itself.

Thanks for the words, DIego/level_0.

Issabella · **Posted:** Mon Mar 02, 2020 9:30 am **(#26)**

Wow Lyle, better, impossible. just the best option on that picture. :clap

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12531

Thanks, Issabella. Now I need to play with something other than stones. Have an idea for beads. We shall see.

Nidhogg · **Posted:** Mon Mar 02, 2020 1:43 pm **(#28)**

Beautiful work lylejk. I like the one in post #19, because it looks like some of the tiles have been fallen off.

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12531

Thanks, Nidhogg. Yeah; was going to clone something in those voids but then thought on similar lines as what you wrote. Does give it an authentic like feel. The missing pieces was an artifact of the Morphological back and forth that I used to smooth the stones.

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12531

OK; this time I used BRL with wooden source for the the result. More matted. Added some texture to the stones as well.

ref: http://www.fontplay.com/freephotos/four ... 008-09.jpg

Issabella · **Posted:** Tue Mar 03, 2020 5:04 am **(#31)**

Lyle, it's really nice this effect you get. I like it a lot. :clap

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12531

Thanks, Issabella. I used G'MIC's Pen preset on the mask (followed by auto-level) to smooth the stones. Worked great on the last one I did, imo.

barrubba2 · **Joined:** Aug 05, 2020 **Posts:** 8

Hi all and happy new year!
I'm reading this paper "Simulating Decorative Mosaics" of Hausner
There is a comparison with gimp mosaic tool and a new algorithm (hausner's algo).
There is a way to improve current version to paper quality and precision? What do you think about it?

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12531

Care to share a link to Hausner's paper? Would like to see how his approach compares to Dr. di Blasi's.

rich2005 · **Joined:** Mar 04, 2011 **Posts:** 2436

A piece of cake.

Quote:

The method uses centroidal voronoi diagrams which normally arrange points in regular hexagonal grids. By measuring distances with an manhattan metric whose main axis is adjusted locally to follow the chosen direction field, the centroidal diagram can be adapted to place tiles in curving square grids

Happy 2021 to all

barrubba2 · **Joined:** Aug 05, 2020 **Posts:** 8

this is the paper
www dgp.toronto.edu/papers/ahausner_SIGGRAPH2001 pdf

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12531

barrubba2 wrote:

this is the paper
www dgp.toronto.edu/papers/ahausner_SIGGRAPH2001 pdf

Yes; I saw this article before many years ago. I even downloaded a program to do these as I recall. Still; I do like Dr. di Blasi's approach a bit better. As for the way I do these, G'MIC skeleton preset does sort on an inverse Voronoi function (i.e., you provide the center dots and it produces the Voronoi outlines). Regardless, this article's result does use much more consistent sized squares. Thanks for the link.

dinasset · **Posted:** Mon Jan 04, 2021 9:12 am **(#38)**

Lyle, did you ever try to ask David whether G'MIC could have a new preset able to create dots following the borders of a user defined area, which could then be input to Skeleton?

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12531

Have not, Diego. David's quite the busy man and I've asked way too much of him over the years. Maybe you can. lololololol

Well, today's my Friday; hope you all have a great day.

barrubba2 · **Joined:** Aug 05, 2020 **Posts:** 8

lylejk wrote:

barrubba2 wrote:

this is the paper
www dgp.toronto.edu/papers/ahausner_SIGGRAPH2001 pdf

The hausner app to test the mosaic quality?
About "di blasi", you currently use the old jar app? Or has been implemented in gmic?

Yes; I saw this article before many years ago. I even downloaded a program to do these as I recall. Still; I do like Dr. di Blasi's approach a bit better. As for the way I do these, G'MIC skeleton preset does sort on an inverse Voronoi function (i.e., you provide the center dots and it produces the Voronoi outlines). Regardless, this article's result does use much more consistent sized squares. Thanks for the link.

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