发明名称 |
Method for antiscatter stationary grid artifacts detection and attenuation in digital radiographic images |
摘要 |
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. |
申请公布号 |
US2003152259(A1) |
申请公布日期 |
2003.08.14 |
申请号 |
US20020068930 |
申请日期 |
2002.02.08 |
申请人 |
BELYKH IGOR N.;CORNELIUS CRAIG W. |
发明人 |
BELYKH IGOR N.;CORNELIUS CRAIG W. |
分类号 |
G06T5/00;G06T5/10;(IPC1-7):G06K9/36 |
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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