Great job! For converting music to readable images, the latex of music typesetting is lilypond, which has the ability to create legible music at any size by scaling the notational glyphs accordingly[1]. This sounds like what you were trying to achieve achieve with opencv.

With that being said, although lilypond is very intelligent about all sorts of typesetting minutiae, but it's probably difficult to wrangle it to run on smart glasses.

[1] https://lilypond.org/doc/v2.24/Documentation/essay/engraving...