发明名称 |
Apparatus for suppressing noise by adapting filter characteristics to input image signal based on characteristics of input image signal |
摘要 |
<p>In an apparatus for suppressing noise in an input image signal representing a radiographic image: at least one first characteristic of the input image signal is obtained by calculation based on information indicating an exposure dose with which the radiographic image has been produced; at least one second characteristic of a smoothing filter is adapted to the input image signal based on the at least one first characteristic; and the input image signal is processed by using the smoothing filter so as to smooth the radiographic image. In addition, a plurality of band-limited image signals respectively representing a plurality of band-limited images belonging to a plurality of different frequency bands are generated based on the input image signal, each of the plurality of band-limited image signals is processed by using the smoothing filter so as to smooth each of the plurality of band-limited images.</p> |
申请公布号 |
EP1223553(A3) |
申请公布日期 |
2003.09.24 |
申请号 |
EP20010124594 |
申请日期 |
2001.10.15 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
MASAHIKO, YAMADA |
分类号 |
G06T5/00;G06T5/20;(IPC1-7):G06T5/20 |
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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