Method for removing grid line artifacts in x-ray images

摘要

A method for removing "grid line artifacts" from x-ray images without changing the diagnostic quality of the x-ray image is presented. The method utilizes the Fourier spectrum (216) of the image to detect the grid line frequencies and employs spectral domain filtering to remove the grid line spectral components. The diagnostic information is preserved by modifying (214,212) the grid line spectral components to be indistinguishable from local variations in image intensity values, and edge density of the x-ray image.