Image analysis – Histogram processing – For setting a threshold
Patent
1991-02-11
1991-12-31
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382 9, 382 13, G06K 900
Patent
active
050778021
ABSTRACT:
The apparatus and method for digitizing and segmenting a handwriting movement comprises an electrical transducer for generating three electrical digital position signals characterizing a trajectory of the handwriting movement. The apparatus comprises a device for low-pass filtering the electrical signals; a device for deriving the electrical signals by predetermined time and transfer functions for generating V.sub.x and V.sub.y electrical components which represent respectively speeds of the point according to X and Y axes of a cartesian reference; and a device for calculating V.sub..sigma. and V.sub.74 values from the V.sub.x and V.sub.y values. The apparatus also comprises a device for calculating handwritten components and handwritten strings, where each of the handwritten components is delimited by two successive liftings of the point along the trajectory, and each of the handwritten strings is delimited by two successive portions of the trajectory where the V.sub..theta. value is higher than a predetermined angular speed value and the V.sub..sigma. value is lower than a predetermined curvilinear speed value.
REFERENCES:
patent: 3699517 (1972-10-01), Dyche
patent: 3955178 (1976-05-01), Warfel
patent: 3962679 (1976-06-01), Enselbrecht
patent: 4028674 (1977-06-01), Chuang
patent: 4040010 (1977-08-01), Crane et al.
patent: 4078226 (1978-03-01), EerNisse
patent: 4128829 (1978-12-01), Herbst
patent: 4190820 (1980-02-01), Crane
patent: 4286255 (1981-08-01), Siy
patent: 4475235 (1984-10-01), Graham
patent: 4495644 (1985-01-01), Parks et al.
patent: 4553258 (1985-11-01), Chainer et al.
patent: 4597101 (1986-06-01), Kishimoto
patent: 4703511 (1987-10-01), Conoval
patent: 4736445 (1988-04-01), Gundersen
patent: 4789934 (1988-12-01), Gundersen et al.
patent: 4856077 (1989-08-01), Rothfjell
Boudreau Leo H.
Ecole Polytechnique
Stellrecht Barry
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