Audiveris / omr-dataset-tools

Reference of OMR data
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Handling of Time Signature #11

Open hbitteur opened 7 years ago

hbitteur commented 7 years ago

If we except CommonTime and CutTime, a time signature is composed of 2 numbers (numerator and denominator).

Should we consider a time signature (say 8/12, assuming this can exist) as one global time symbol (combo, such as "8/12") or as two time number symbols (numerator, denominator such as "8" and "12") or as two sequences of time digit symbols (such as {"8"} and {"1", "2"})?

We can handle a limited set of predefined combos. Some are already in OmrShape class, perhaps we could a few more,but we can't address all possible combos. We have to be able to recognize individual time digits. Even for a combo, could MuseScore generate number symbols (one for num, one for den)? Perhaps also single digit symbols? The more symbols, the better (even if they overlap).

wschweer commented 7 years ago

Boundig boxes for numerator and denominator strings can be reconstructed by MuseScore. Its more expensive to do this for single glyphs.

hbitteur commented 7 years ago

Perhaps we can forget about single digit extraction, provided that we address the most common 2-digit numbers found in time signature (say at least 10, 12, 16)?

lasconic commented 7 years ago