SLIT PHOTOGRAPHY AND IMAGE INFORMATION READER

摘要

PURPOSE: To obtain image information from which the influence of a slit moving speed, X-ray variation, etc., is removed by correcting a recorded radiation image according to information related to an extracted position and intensity on the radiation image of X-ray irradiation. ;CONSTITUTION: A peak position calculating device 9 calculates a peak position along the movement direction of a slit. An edge part extracting device 10 detects an edge part from recording information stored in an image memory 6. A peak height calculating device 11 detects the peak height at the edge part. Then a density unevenness correction quantity calculating device 12 performs an averaging process by performing the composite integration of the edge part and calculates signal intensity unevenness due to the irradiation intensity unevenness of X rays as a density unevenness correction quantity. Further, a composing device 13 subtracts the density unevenness correction quantity from the recording information stored in the image memory 6 to extract real image information, which is corrected and then stored in an image memory 14.;COPYRIGHT: (C)1994,JPO&Japio