| 摘要 |
PROBLEM TO BE SOLVED: To effectively suppress noise independently of the dose of radioactivity in a noise suppression processing unit suppressing a noise component included in a radiographic image. SOLUTION: The noise suppression processing unit 100 is provided with a band limit image signal generating section 1 that generates band limit image signals Bk respectively carrying images with different frequency bands on the basis of an received image signal Sin, an index acquisition section 2 that obtains an index denoting a degree of suppressing a noise component corresponding to the dose on the basis of information denoting the dose of radiant rays in the case of obtaining a radiographic image, a noise suppression processing section 3 that applies noise suppression processing to each of the band limit image signals Bk on the basis of the obtained index, and an image reconfiguration section 4 that reconfigures processed image signals Sproc carrying the images whose noise in suppressed on the basis of band limit image signals fBk whose noise components are suppressed. |
