Image analysis – Image enhancement or restoration – Object boundary expansion or contraction
Patent
1999-03-11
2000-10-31
Rogers, Scott
Image analysis
Image enhancement or restoration
Object boundary expansion or contraction
382266, 382275, 382199, 382205, 382237, G06K 944, G06K 946, G06K 940, G06T 530, H04N 1409
Patent
active
061414603
ABSTRACT:
An edge detection method employs binary morphological erosion. A binary image is generated from the gray-scale-value input image. A structure element is guided in a step-by-step manner across the binary image and generates an eroded binary image in accordance with an erosion rule. By forming the difference between the binary image and the eroded binary image, an output image containing the edges is generated. An output image which contains masked edges is generated through the use of a further erosion rule. The further erosion rule is based on a gray-scale value threshold and is applied to the eroded binary image to form a twice-eroded binary image. The difference between the twice-eroded binary image and the binary image forms the image which contains masked edges.
REFERENCES:
patent: 4477926 (1984-10-01), Linger et al.
patent: 4481664 (1984-11-01), Linger et al.
patent: 4866785 (1989-09-01), Shibano
patent: 4980923 (1990-12-01), Kawamoto et al.
patent: 5438636 (1995-08-01), Surka
patent: 5452367 (1995-09-01), Bick et al.
patent: 5537485 (1996-07-01), Nishikawa et al.
patent: 5680485 (1997-10-01), Loce et al.
patent: 5953461 (1999-09-01), Yamada
International Publication No. WO 95/15537 (Giger et al.), dated Jun. 8, 1995.
"Praxis der Digitalen Bildverarbeitung und Mustererkennung" (Haberacker), Carl Hanser Verlag Munchen/Wien, 1985, p. 108.
"Boundary-Constrained Morphological Skeleton Minimization and Skeleton Reconstruction" (Pai et al.), IEEE Transactions on Pattern Analysis And Machine Intelligence, vol. 16, No. 2, Feb. 1994, pp. 201-208;.
"Analysis of Thinning Algorithms Using Mathematical Morphology" (Jang et al.), IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 12, No. 6, Jun. 1990, pp. 541-551.
Amer Aishy
Reichert Steffen
Greenberg Laurence A.
Lerner Herbert L.
Rogers Scott
Siemens Aktiengesellschaft
Stemer Werner H.
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