Image analysis – Image enhancement or restoration – Edge or contour enhancement
Reexamination Certificate
2004-08-04
2008-11-25
Johns, Andrew W. (Department: 2624)
Image analysis
Image enhancement or restoration
Edge or contour enhancement
C382S199000, C382S240000, C382S260000
Reexamination Certificate
active
07457475
ABSTRACT:
In an edge detecting apparatus and a noise eliminating apparatus, low AC components are detected from frequency components obtained by orthogonally transforming an image signal in rectangular units. Edge components are included in the low AC components among the frequency components. Based on this characteristic, based on the result of detecting the low AC components, in a rectangular-unit image corresponding to the low AC components, it is determined whether edge components corresponding to the low AC components are included in a rectangular unit image, and an edge direction is detected if the edge components are included. This enables ensured detection of edge components in any portions of a screen.
REFERENCES:
patent: 5425114 (1995-06-01), Hamasaki et al.
patent: 5917955 (1999-06-01), Kojima
patent: 6148115 (2000-11-01), Mackinnon et al.
patent: 6370279 (2002-04-01), Paik
patent: 6418242 (2002-07-01), Maurer
patent: 6477279 (2002-11-01), Go
patent: 6748113 (2004-06-01), Kondo et al.
patent: 6771793 (2004-08-01), Yamada
patent: 6847737 (2005-01-01), Kouri et al.
patent: 6985636 (2006-01-01), Semenchenko
patent: 7106386 (2006-09-01), Kobayashi
patent: 7151858 (2006-12-01), Kyong
patent: 2005/0058365 (2005-03-01), Wang et al.
patent: 6-260889 (1994-09-01), None
patent: 7-236142 (1995-09-01), None
patent: 11-17954 (1999-01-01), None
Lee et al, “Multiresolution gradient-based edge detection in noisy images using wavelet domain filters”, Society of Photo-Optical Instrumentation Engineers, 39(9) 2405-2412 (Sep. 2000).
Allison Andrae S
Johns Andrew W.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Corporation
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