Method and apparatus for extracting an abnormal pattern

Details Method and apparatus for extracting an abnormal pattern Method and apparatus for extracting an abnormal pattern

1997-08-26

1999-06-08

Boudreau, Leo H.

Image analysis

Image transformation or preprocessing

General purpose image processor

382132, 382273, G06K 956

Patent

active

059110147

ABSTRACT:
In closing processing, maximum value processing is carried out with a structure element on an original image signal, and maximum value signals are thereby obtained as intermediate results and stored in an intermediate memory. The intermediate memory has a storage space of (the same number of lines as that of picture elements constituting the structure element).times.(the number of picture elements lying on one line in the array of picture elements of the original image). Minimum value processing is then carried out with the structure element on the maximum value signals having been stored along one line in the intermediate memory. Each time the minimum value processing for one line in the intermediate memory is finished, the maximum value signals having been stored in the intermediate memory are shifted back by one line, and the maximum value processing is then carried out for one line in the array of picture elements of the original image. The storage space of the intermediate memory is thereby kept small.

REFERENCES:
patent: 4809343 (1989-02-01), Wakabayashi et al.
patent: 4969203 (1990-11-01), Herman
"Extraction of Small Calcified Patterns With a Morphology Filter Using A Muliply Structure Element", Collected Papers of The Institute of Electronics and Communication Engineers of Japan, D-II, vol. J75-D-II, No. 7, pp. 1170-1176, Jul. 1992.
"Fundamentals of Morphology and Its Application to Mammogram Processing", Medical Imaging Technology, vol. 12, No. 1, Jan. 1994.

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