These notes are good for line drawings…
Problems with old lithographs, wood carvings, line drawings….
- foxing: discoloration due to mildue, etc.
- yellowing of paper
- creases, folds, etc.
Things to try (tying to get rid of the background color):
- crop the image and put it on a layer.
- Auto color, see if you can do the auto colors.
- [...]
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