> On 28 Jul 2024, at 12:05, Werner LEMBERG <w...@gnu.org> wrote: … > Anyway, AFAICS, it doesn't provide what we need for LilyPond.
It seems hard to find what you are asking for, as most programs are GUI oriented. Some inputs, though: A program switching the images so that differences like in your example can be observed. The other uses a metric comparison, but has been mentioned the context of LilyPond before. https://github.com/proninyaroslav/blink-comparison https://github.com/myint/perceptualdiff