Methods and apparatus for reproducing a gray scale raster repres

Details Methods and apparatus for reproducing a gray scale raster repres Methods and apparatus for reproducing a gray scale raster repres

1995-02-01

1998-03-31

Johns, Andrew

Image analysis

Image enhancement or restoration

Object boundary expansion or contraction

382288, G06K 948

Patent

active

057347565

ABSTRACT:
A method for generating a vector representation of the skeletal configuration of an elongate graphic image from a raster representation thereof, the method comprising providing a gray scale raster representation of the graphic image, for at least one of a plurality of lines of the raster representation, performing the following processes at least once: employing the gray scale raster representation to determine two path endpoints and computing a midpoint between the two endpoints.

REFERENCES:
patent: 3673566 (1972-06-01), Reede
patent: 5091974 (1992-02-01), Sasahara et al.
English Translation of Japanese Kokai No. 59-5387, Miyagawa et al., Jan. 1984.
Gonzalez et al., Digital Image Processing, 1992, Addison-Wesley Publ. Co., 492-494.
Schneider P., "An Algorithm for Automatically Fitting Digitized Curves", Graphic Gems, Ed. Academic Press Professional, 1990, 612-626, 797-807.

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