Awhile ago someone asked how a product like ABBYY Finereader, which does great when OCRing typed text, does on handwriting. Not well at all I'm afraid:
https://gist.github.com/dannguyen/50dcb5a8f4230e7a8a40bfe2d0...
https://gist.github.com/dannguyen/50dcb5a8f4230e7a8a40bfe2d0...