Method and apparatus for preparing picture masks and for digitiz

Details Method and apparatus for preparing picture masks and for digitiz Method and apparatus for preparing picture masks and for digitiz

1989-08-15

1992-06-02

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

382 33, 382 48, G06K 900

Patent

active

051194406

ABSTRACT:
A method and apparatus for preparing a mask of an area of interest in a picture to be separated from the remainder of the picture. Data defining a rectangular section of the area of interest enclosing an edge of the picture is inputted into a data processor by specifying the distance between two spaced parallel lines determining the width of the rectangular section, and specifying the starting point and ending point of the rectangular section determining the length of the rectangular section. The inputted data is processed to digitize the edge of the picture enclosed within the rectangular section. The above steps are repeated for the remaining sections of the area of interest to digitize the complete edge of the picture within the remaining sections of the area of interest.

REFERENCES:
patent: 4583125 (1986-04-01), Yamada
patent: 4783829 (1988-11-01), Miyakawa
patent: 4884224 (1989-11-01), Hirosawa
Manfred H. Hueckel "An Operator which Locates Edges in Digitized Pictures", Journal of the Association for Computing Machinery, vol. 18, No. 1, Jan. 1971, pp. 113-125.

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