Image analysis – Histogram processing
Reexamination Certificate
2008-01-22
2008-01-22
Bella, Matthew C. (Department: 2624)
Image analysis
Histogram processing
C382S240000, C382S226000, C382S254000, C382S260000, C382S274000, C375S240000, C375S240010, C375S240180, C375S240190, C341S079000
Reexamination Certificate
active
10705269
ABSTRACT:
Processing for improving the contrast of an image of interest is executed by an image processing circuit in an X-ray photography apparatus. The image is decomposed into coefficient values of a plurality of frequency bands by a frequency-component decomposition circuit to obtain coefficients of each and every frequency band. A coefficient conversion circuit converts coefficient values with regard to at least one frequency band of the plurality of frequency bands in such a manner that a frequency distribution of coefficient values of every frequency band will become a prescribed frequency distribution. A restoration circuit generates an image using the coefficient values obtained by the conversion performed by the coefficient conversion circuit.
REFERENCES:
patent: 6130724 (2000-10-01), Hwang
patent: 6163621 (2000-12-01), Paik et al.
patent: 6463173 (2002-10-01), Tretter
patent: 7079700 (2006-07-01), Shinbata
patent: 7142722 (2006-11-01), Fukuhara et al.
patent: 2002/0169761 (2002-11-01), Endo et al.
patent: 2003/0016855 (2003-01-01), Shinbata
patent: 2003/0097068 (2003-05-01), Hossack et al.
patent: 0527 525 (1993-02-01), None
patent: 10-191100 (1998-07-01), None
patent: WO 02/45020 (2002-06-01), None
Andrew F. Laine et al, “Mammographic Feature Enhancement by Multiscale Analysis,” IEEE Transactions on Medical Imaging, vol. 13, No. 4, pp. 725-750 (Dec. 1994).
Pieter Vuiylsteke et al., “Image Processing in Computed Radiography” DGZFP Proceedings BB 67-CD, p. 16, pp. 87-101 (Mar. 15-17, 1999).
Sang-Yeon Kim et al., “Image Contrast Enhancement Based on the Piecewise-Linear Approximation of CDF,” IEEE Transactions on Consumer Electronics, vol. 45, No. 3, pp. 828-834 (Aug. 1999).
European Patent Office Communication regarding EP Appl. 03256879.2-2218 dated Nov. 17, 2005.
Japanese Office Action for Appl. 2002-337127, dated Jul. 25, 2005.
J. Toriwaki; “Digital Image Processing for Image Understanding”; vol. 1 and vol. 2; First Edition, Fourth printing;Shokodo; Tokyo, 1988; pp. 133-135.
Shibata Hiroyuki
Takahashi Naoto
Tsuchiya Keiji
Bayat Ali
Bella Matthew C.
Canon Kabushiki Kaisha
Morgan & Finnegan L.L.P.
LandOfFree
Image processing apparatus and method for improving the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image processing apparatus and method for improving the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing apparatus and method for improving the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3942923