I have a bunch of black&white drawings (to be exact grayscale) and I took pictures of them. I want to change their backgrounds to white. I don't have a Photoshop license, so I was wondering if there are other software packages I can use. I have clip studio paint (formerly known as manga studio). They have a feature called Correction Layer -> Binarization, however, this gets rid of some gray pixels and the drawing looks a bit rough. Can this be done in gimp?
I found this message Change background color from brown to white (remove sepia) and I can do it on my mac but the background is still grayish. What I need, I think, is convert some the pixels that are closed to white to white.
PS. Just in case you were wondering, I did go to a store to scan them but high quality scanning is very expensive (I live in Vancouver) and I gave up that idea.