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Apparatus for suppressing noise by adapting filter characteristics to input image signal based on characteristics of input image signal
Apparatus for suppressing noise by adapting filter characteristics to input image signal based on characteristics of input image signal
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机译:通过基于输入图像信号的特性使滤波器特性适应于输入图像信号来抑制噪声的设备
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摘要
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.
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