Image analysis – Histogram processing – For setting a threshold
Patent
1990-10-31
1993-06-01
Razavi, Michael T.
Image analysis
Histogram processing
For setting a threshold
382 1, 209900, G06K 934
Patent
active
052167259
ABSTRACT:
A computer system and a method for a mail sorting operation in which the computer system determines the location of the ZIP code within a digital image of an address block from a piece of mail. An interstroke distance is calculated for the image and the strokes of the image are thinned to enhance vertical separation between the lines of the address block. A medial axis for each line is determined and the medial axis is superimposed upon the digital image. A bleeding operation is conducted on the digital image from the medial axis at which data bits that do not connect to the medial axis are notated as punctuation and interlinear connected strokes are then divided between the two lines. The last line which is determined to be large enough to contain a ZIP code based on bounding box size is then selected. Alternate splits of words are formed and the best split is selected in which the last formed group is detected to be the ZIP code.
REFERENCES:
patent: 3328760 (1963-12-01), Beltz
patent: 3500323 (1965-12-01), Funk et al.
patent: 3832682 (1974-08-01), Brok et al.
patent: 4024500 (1977-05-01), Herbst et al.
patent: 4066998 (1978-01-01), Lidkea
patent: 4105998 (1978-08-01), Yoshida et al.
patent: 4158835 (1979-06-01), Miura et al.
patent: 4317109 (1982-02-01), Odaka et al.
patent: 4461029 (1984-07-01), Van Bilzen et al.
patent: 4481665 (1984-11-01), Ota
patent: 4516174 (1985-05-01), Kammoto
patent: 4528692 (1985-07-01), Umeda et al.
patent: 4607386 (1986-08-01), Morita et al.
patent: 4653107 (1987-03-01), Shojima et al.
patent: 4654873 (1987-03-01), Fujisawa et al.
patent: 4680803 (1987-07-01), Dilella
patent: 4718102 (1988-01-01), Crane et al.
patent: 4731857 (1988-03-01), Tappert
patent: 4757549 (1988-07-01), Machart et al.
patent: 4764972 (1988-08-01), Yoshida et al.
patent: 4783831 (1988-11-01), Kashioka et al.
patent: 4797806 (1989-01-01), Krich
patent: 4805228 (1989-02-01), Jenkins et al.
patent: 4817034 (1989-03-01), Hardin, Sr. et al.
patent: 4847912 (1989-07-01), Tanaka et al.
patent: 4876733 (1989-10-01), Lavin
patent: 4887303 (1989-12-01), Hongo
patent: 4933977 (1990-06-01), Ohnishi et al.
patent: 5050218 (1991-09-01), Ikeda et al.
patent: 5103489 (1992-04-01), Miette
"A System for Feature-Model-Based Image Understanding" by Brian T. Mitchell and Andrew M. Gillies of ERIM, 1987.
"A Model-Based Computer Vision System for Recognizing Handwritten Zip Codes" by Brian Mitchell and Andrew Gillies published in Machine Visions and Application, Fall, 1989.
Environmental research Institute of Michigan
Klocinski Steven P.
Razavi Michael T.
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