Method and apparatus for non-contact signature imaging

Details Method and apparatus for non-contact signature imaging Method and apparatus for non-contact signature imaging

1995-06-05

1999-01-05

Moore, David K.

Image analysis

Applications

Personnel identification

382123, 382198, G06K 900, G06K 948

Patent

active

058570292

ABSTRACT:
A portable, hand-held apparatus for capturing a gray scale image of a signature within a box having fiducial marks in the corners. Portions of the image outside the box are trimmed away and the box is oriented and scaled to a standard size and shape. Signature storage requirements are minimized and signature recognition is facilitated by thresholding the gray scale image and thinning the strokes of the signature to an image width of one pixel.

REFERENCES:
patent: 4020463 (1977-04-01), Himmel
patent: 4286255 (1981-08-01), Siy
patent: 4562592 (1985-12-01), Chainer et al.
patent: 4776464 (1988-10-01), Miller et al.
patent: 4855842 (1989-08-01), Hayes et al.
patent: 5050223 (1991-09-01), Sumi
patent: 5054102 (1991-10-01), Gaborski
patent: 5103489 (1992-04-01), Miette
patent: 5120940 (1992-06-01), Willsie
patent: 5199081 (1993-03-01), Saito et al.
patent: 5237625 (1993-08-01), Yamashita et al.
patent: 5296960 (1994-03-01), Chandler et al.
patent: 5378883 (1995-01-01), Batterman et al.
Sukhan et al., "Offline Tracing and Representation of Signatures," IEEE Transactions on Systems, Man, and Cybernetics, vol. 22, No. 4, pp. 755-771 (Jul. 1992).
Wilkinson et al., "Use of Synthetic Discriminant Functions for Handwritten-Signature Verification," Applied Optics, vol. 30, No. 23, pp. 3345-3353 Aug. (1991).
Rafael C. Gonzalez and Richard E. Woods, Digital Image Processing, 1992, Addison-Wesley Publishing Company, Inc., pp. 416-425, 452-456.
R. C. Gonzalez and R. E. Woods, Digital Image Processing, 1992, Addison-Wesley, pp. 199-201.

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