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Reviewing replacements for the Office 2007 MODI OCR (OneNote's 2010 solution has lesser quality/results than 2007) I noticed that Windows 7 contains an OCR library once you install the optional TIFF IFilter.
The OCR component gets installed to %programfiles%\Common Files\microsoft shared\OCR\7.0\xocr3.psp.dll but I don't see any API for it. How can this be interfaced in C#?