Image analysis – Applications – Biomedical applications
Reexamination Certificate
2006-05-23
2006-05-23
Mancuso, Joseph (Department: 2627)
Image analysis
Applications
Biomedical applications
C382S278000, C382S275000, C382S261000
Reexamination Certificate
active
07050618
ABSTRACT:
A method for detecting and attenuating grid artifacts in a digital radiographic image comprising; providing an input digital radiographic image; processing the input digital radiographic image with a detection algorithm based on 2-D dynamic correlation in both spatial and frequency domains to determine whether the input digital radiographic image has a grid artifacts; and if it does detecting the grid orientation, frequency, and signal-to-noise ratio of the grid artifacts, designing a frequency bandstop (notch) digital 1-D filter as a function of the grid frequency and attenuation level; and suppressing the grid artifacts by further processing said input digital radiographic image with said designed filter to produce an output digital radiographic image of improved image quality.
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Belykh Igor N.
Cornelius Craig W.
Eastman Kodak Company
Kronenthal Craig
Mancuso Joseph
Parulski Susan L.
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