Transcribe

Transcription is the heart of OMR, the difficult process to infer high-level music information from low-level graphical data.

This process can be launched directly from the toolbar icon:

It can also be launched via the pull-down menu Book → Transcribe book:

This command applies to all images (sheets) in the input file (book).

There is also the pull-down menu Sheet → Transcribe sheet which applies only to the current sheet. In the simple case at hand, since we have just one image in the input file, the book-level and sheet-level commands are equivalent.

After some time, we get the following image of transcribed music:

Looking carefully at this result, we might detect a couple of mistakes:

  • On the upper left, the word “Flûte” was OCR’d as “Flfite” 1
  • On the lower left, a flat sign was not recognized 2
  • On the lower right, a quarter rest was not recognized3

This could easily be corrected by manual actions, but let us simply ignore them for now to keep this example short.

  1. This is a French word, while the OCR language is English by default. See Tools → Languages ↩

  2. The underlying glyph collides with a ledger, resulting in poor grade. ↩

  3. This is due to an overlap with a flag item. ↩