资料来源 : Free On-Line Dictionary of Computing

Optical Character Recognition
     
         (OCR, sometimes /oh'k*/) Recognition of printed or
        written characters by computer.  Each page of text is
        converted to a digital using a {scanner} and OCR is then
        applied to this image to produce a text file.  This involves
        complex {image processing} {algorithms} and rarely achieves
        100% accuracy so manual proof reading is recommended.
     
        (1999-08-26)