Greetings from Chicago

nutgraf48 · **Joined:** Jul 30, 2021 **Posts:** 2

Hi to all!
Very excited to have found this site and am looking forward to participating fully. I've now been working with GIMP for about five years after starting out with Photoshop. Still pretty much a newbie with a lot of questions. Here's one. What exactly does the "Selective Gaussian Blur" filter do, what is "selective" about it? What is "Maximum Delta"?

I've been following the directions in a video tutorial for converting a photo into a watercolor and am getting the appropriate effects (I guess), but I would like to understand the "how" and "why" of this filter. Thanks for any hints.

NG48

Wallace · **Posted:** Fri Jul 30, 2021 5:57 pm **(#2)**

Welcome to the forum nutgraf48!
:jumpclap

"Contrary to the other blur plug-ins,
the Selective Gaussian Blur plug-in doesn't act on all pixels:
blur is applied only if the difference between its value,
and the value of the surrounding pixels is less than a defined Delta value."

Taken form gimp documentation (link below).

https://docs.gimp.org/2.8/en/plug-in-sel-gauss.html

Issabella · **Posted:** Sat Jul 31, 2021 1:05 am **(#3)**

Welcome to Gimp Chat, nutgraf48

mackenzieh · **Posted:** Sat Jul 31, 2021 2:10 am **(#4)**

Welcome to Gimp Chat!

00111111 · **Posted:** Sat Jul 31, 2021 3:21 pm **(#5)**

Erisian · **Posted:** Mon Aug 02, 2021 3:11 am **(#6)**

Hi nutgraf48, welcome to GC.

mahvin · **Joined:** Oct 06, 2010 **Posts:** 4050

Welcome, nutgraf48!