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Re: Recognition of Piano Roll Lyrics
By Robbie Rhodes

> Robbie,
> I finally received a copy of Japanese OCR software upgrades and a
> complete manual. With the help of those, I learned the process of
> registering a pattern being corresponded to a charactor. I took an
> example of 'BLUE' with B like as l3. I registered each B, L, U and E
> independently and assigned B, L, U and E respectively. Then I ran an
> automatic recognition process and it recognized those characters
> correctly 100% of time. It appears the registered charactor has
> priority to be recognized first, thus, 1or 3 never resulted. By
> expanding this, I mean to register all 26 charactors, we should be able
> to read the lyrics reasonably well.
>
> Regards,Shin Ohkura

That's great news, Shin, and thank you very much for your efforts.
Wayne Stahnke has already attempted to scan the lyric from the piano
roll, but the contrast is still too low, and the background noise of
the old paper is a big problem.  We must still experiment to increase
the "signal to noise ratio."

I found an old stencil-punching machine at work, and I made a stencil
of all 26 letters plus punctuation marks.  The character height is
about 10 mm in the original stencil.  Then I made a photographic
contact print which is very "crisp" with sharp edges, etc., and of
course there is no background noise, as in the real piano roll.  So
this will be a good sample for training the OCR program.  I will send
these character images to you via fax.

Best regards,  Robbie Rhodes

• ----------------------------------
|         Robbie Rhodes            |
| Return-Path: rrhodes@foxtail.com |
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(Message sent Tue, 6 Aug 1996 07:52:07 -0700 , from time zone -0700.)

Key Words in Subject:  Lyrics, Piano, Recognition, Roll