Gamera

http://gamera.informatik.hsnr.de

Has anyone seen this? It has some references to music (e.g. Optical Tablature Recognition Toolkit).

Some links:

https://cseweb.ucsd.edu/classes/sp11/cse190-a/reports/tikang_m2perry.pdf
https://github.com/DDMAL?language=c%2B%2B