Problem to be solved: to provide a radiation image processing apparatus and a radiation image processing method capable of reducing the scattering line component of a radiation image with high accuracy by image processing.Radiation image processing apparatus 30 includesA radiographic image acquisition part 33 for obtaining a radiographic image taken by an object obj using a radiation RA andA region discriminator 34 for discriminating a plurality of regions using a radiation image andUsing scattered ray component estimation processing for each region.A scattering line component estimating unit 36 for estimating scattered line components of radiation for each region andA scattering line component subtracting section 37 for subtracting scattered line components for each region andThe scattered ray component estimating part 36 and the scattering line component subtracting Part 37 are used.By sequentially estimating and subtracting scattered line components for each regionAn image processing unit 35 which generates scattered image of subtracted scattered component components by subtracting scattered component components and.Diagram【課題】画像処理によって精度良く放射線画像の散乱線成分を低減できる放射線画像処理装置及び放射線画像処理方法を提供する。【解決手段】放射線画像処理装置３０は、放射線Ｒａを用いて被写体Ｏｂｊを撮影した放射線画像を取得する放射線画像取得部３３と、放射線画像を用いて複数の領域を判別する領域判別部３４と、領域ごとに異なる散乱線成分推定処理を用いて、領域ごとに放射線の散乱線成分を推定する散乱線成分推定部３６と、領域ごとに散乱線成分を減算する散乱線成分減算部３７と、散乱線成分推定部３６と散乱線成分減算部３７とを用いて、領域ごとに散乱線成分を順次に推定及び減算することにより、散乱線成分を減算した散乱線成分減算画像を生成する画像処理部３５と、を備える。【選択図】図２
