09-16-2018, 02:07 PM
(09-16-2018, 09:20 AM)Ofnuts Wrote:(09-16-2018, 08:59 AM)carmen Wrote: it kept cropping up at unlikely moments to mess things--especially on the boundary of the alpha channel of the particular layer.
Thanks!
You are possibly using the wrong technique here. The pixels at the edge of objects are a blend of colors, the right things to do is to use Colors>Color to alpha to remove the background color and leave a partially transparent pixel.
One things I have learned over the years is that when Gimp appears to do the wrong thing it is because I'm not using the right technique.
I dare say!
Only, try that on some of the images I start from:
- scanned cover of a book from around 1920, from gutenberg.org--if hardcover, very likely the bindind is cloth...
- scanned cover of a number of Argosy, All Story Weekly, Amazing, or other pulps of a century ago: paperback, of course, but aside from the printing methods of the time, very much handled, scratched, crumpled, when not rent in places...
Whatever amount of healing and blurring I apply to begin with, color erase/color to alpha leaves me with a wealth of unrelated pixels along the whole canvas (yes, and on my wished-for boundary too) that are ten times more difficult to dispose of than dealing with the consequences of a straight deleting of the background--with or without help of or a mask.
So, excuse me, bur I find yours to be a 'counsel of perfection': how fine if it only were practical!
Thanks!