(03-15-2024, 09:36 PM)rinaldop Wrote: Hello yet again,
I am trying to remove the background of the following 2 images leaving only the dials and the numbers on the outer ring and also remove the center hole.
The first one: No a "simple filter solution", though, and certainly not the best solution
Duplicate the original, on the duplicated go to Colors ➤ Desaturate ➤ Mono Mixer..., lower the green channel
Then go to the Channel dialog and drag any channel down (don't forget to select the channel back, because the one you have dragged down will be un-selected ➤ Select it back)
Go back to the layers' dialog select the top layer and add a mask with those setting (mask from channel)
Then Select the original layer below, Colors ➤ Levels... move those 2 tiny sliders (triangle) until the clouds disappear
Then select the Mask (click on it) and straighten the blacks at the bottom of the Curves Colors ➤ Curves to mostly give back the red color
Not perfect but from there you should be able to work on the "Visible"
Patrice