Patent ID: 8009892

Claim:
An X-ray image processing system, comprising: a radiographing section including an X-ray source to emit X-rays for an object to be radiographed and an image detector to detect X-rays having passed through the object, wherein the radiographing section is adapted to conduct a phase contrast radiography by providing a space between the object and the image detector and by irradiating X-rays having an X-ray energy of 15 to 30 (keV) from the X-ray source to the object; an image data producing section to produce X-ray image data of X-ray image detected by the image detector; an image processing section to apply an image processing including a noise reducing process and an edge enhancement process for the produced X-ray image data; and an output section to output the processed image data applied with the image processing, wherein the image data producing section comprises: a density-related correcting section to control the noise reducing process and the edge enhancement process in accordance with an image density level of pixels of the X-ray image data such that a degree of noise reduction for pixels having a low image density level is higher than a degree of noise reduction for pixels having a high image density level and a degree of edge enhancement for pixels having a high image density level is higher than a degree of edge enhancement for pixels having a low image density level.