Radiographic image processing method wherein small variation of density is selectively made clear

摘要: A method for processing a radiographic image, containing: step calculating an average Sm of original image data averaging area around each pixel the image; and transforming S to obtain processed Q in accordance with equation, Q=S+ƒ(S-Sm), where ƒ(S-Sm) has characteristic at least one first second ranges difference S-Sm, S-Sm is positive range negative range, according above characteristic, absolute value |Q-S| varies increasing monotonic function |S-Sm | when less than predetermined value, decreasing more value. The may be non-odd S-Sm.