Image analysis – Applications – Reading bank checks
Patent
1995-08-31
1998-03-17
Mancuso, Joseph
Image analysis
Applications
Reading bank checks
382194, 382320, G06K 708, G06K 920
Patent
active
057296219
ABSTRACT:
A signal extraction and character recognition system is provided for an MICR system using E13B font characters and a magneto-resistive read head. Each character is treated as defining a block comprising a matrix of equal sized zones. Because adjacent characters are separated by space (e.g., non-residually magnetized regions), the read head output signal is used to first identify the start of each character. As the document bearing the characters moves relative to the head, the signal strength from each vertical zone is summed. The relative vertical column signal strength is then compared to the vertical column signal strength for the preceding column to form a ratio set. The ratios are then quantized into one of three levels, depending upon whether R>T.sub.1 (a first threshold, preferably 4/3), R<T.sub.2 (a second threshold, preferably 3/4), T.sub.2 .ltoreq.R.ltoreq.T.sub.1. The patterns of these three quantized levels uniquely identify the 14 characters in the E13B character set. These patterns from the processed output signal from the magneto-resistive head are compared with the contents of a look-up table (or the equivalent) containing patterns for the 14 characters in the E13B font to identify the character being read.
REFERENCES:
patent: 3212058 (1965-10-01), Sanner
patent: 3278900 (1966-10-01), Wood
patent: 4143356 (1979-03-01), Nally
patent: 4475238 (1984-10-01), Everhart
patent: 4668913 (1987-05-01), Vinal
patent: 5091961 (1992-02-01), Baus, Jr.
patent: 5091968 (1992-02-01), Higgins et al.
patent: 5151952 (1992-09-01), Canu et al.
patent: 5266786 (1993-11-01), Mazumder
patent: 5524063 (1996-06-01), Henrot
Franklin Gene R.
Ho Benedict C-M
Marshall Gary R.
Chang Jon
Kaufman Michael A.
Mancuso Joseph
NCR Corporation
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