how to re-color some parts of a image ....

[rich2005]

(08-03-2025, 11:03 AM)saint_m Wrote: what is aimed: 
 - this visualzid network should be visible on a background with a colorde color sheme. 
- therfore the here visible dots and lines (connections) should be re-colorized (to be visible on the gradient network) 

so we need to do several things

a. create a background with the color sheme (a gradient color-sheme)

see an example:; 
 
since this network should be shown up in white - (white dots and white lines) - all of the colors (in our little example-image) should be "re-colored" - to be finally visible as white 

b. working on the "network" . consisting of the dots and lines) exchange the colors everything that is black to wihte. (that will recolor the lines)

Look forard to hear from you

You can try this:

   

(1) Layer -> Colors -> Color-to-Alpha  Leave default white for the white background but reduce Opacity THreshold to 0.7 - 0.8
(2) Colors -> Desaturate -> Mono Mixer with all channels to minimum -5.000 Gives a black image

   

(3) Colors -> Invert  for a white image.
(4) If you want more solid color - Duplicate layer, set the layer mode to  Grain Merge.