Optical Scanner for Music Box Discs
By Robbie Rhodes
Jack, you asked if there is a system which could optically read music box discs.
There isn't yet, but I would like to try it. Wayne Stahnke sends the scanned lines of music-roll images to a large disk file, and then processes the data by fitting (in concept) a tracker bar template to best align with the image of the notes. I think I could convert a scanned image of a music disk from rho-theta (radial) coordinates into x-y coordinates, like a music roll, and then it could be processed using Wayne's existing methods.
Let's try this experiment: select a small disc from your collection (of a familiar tune) and make a photocopy with an office copier. Verify that the image of the disk is nicely black and white -- no specular reflections. Mail the photocopy to me and I'll make a binary TIF file with an image scanner, and then I'll "write a little program" to perform polar-to-rectangular image conversion. Actually, this is a routine conversion task, used, for example, to display aircraft radar imagary on a raster-scan video monitor.
Robbie Rhodes
6595 Ash Avenue
Etiwanda, CA 91739
tel 909-899-1525
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| Robbie Rhodes |
| Return-Path: rrhodes@foxtail.com |
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(Message sent Sun 4 Aug 1996, 07:12:48 GMT, from time zone GMT-0700.) |
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