发明名称 |
Method for antiscatter stationary grid artifacts detection and attenuation in digital radiographic images |
摘要 |
<p>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. <IMAGE></p> |
申请公布号 |
EP1372108(A3) |
申请公布日期 |
2004.05.19 |
申请号 |
EP20030075307 |
申请日期 |
2003.02.03 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
BELYKH, IGOR N.;CORNELIUS, CRAIG W. |
分类号 |
G06T5/00;G06T5/10;(IPC1-7):G06T5/00 |
主分类号 |
G06T5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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