Radiation image generation method and image processing device

Abstract

An image processing elementof the present invention includes a weighting factor setting elementthat sets up a weighting factors w, wof the weight addition combing a nearest neighbor interpolation and a bilinear interpolation based on an absolute value |I−I| of the difference between the pixel value Iacquired by the nearest neighbor interpolation and the pixel value Iacquired by the bilinear interpolation; and a weight addition elementthat implement a weighting addition based on the set-up weighting factors w, w. A reconstructed image can be acquired by arranging the backprojection pixel value Ievery pixel following the weighting. A reconstructed image can be obtained in which any noise and artifacts are reduced by setting the weighting factor of the image processing algorithm causing a negative effect on the region of some pixel values to be minimal and setting the weighting factor of the (other) image processing algorithm causing a positive-effect on the same pixel value region to be maximum based on the absolute value |I−I| of the difference.