Patent ID: 8530850

Claim:
An x-ray imaging device ( 28 ), comprising: a camera radiation detector substrate comprised of an array of pixels, each pixel collecting electrical charges generated responsive to absorption of radiation energy, the collected electrical charges defining an uncorrected image pixel value of the corresponding pixel; an output for producing multiple different image frames ( 44 ), each frame comprising an array ( 45 ) of the uncorrected image pixel values from the detector substrate; a correction part ( 20 , 49 , 22 , 24 ) for individually applying an individualized, pixel-specific calibration correction function to each of the uncorrected image pixel values of the output, including offset correction, for correcting the uncorrected image pixel values from each frame of the different image frames to provide a normalized image data to a display for presenting an x-ray image, the calibration correction function being specific to each of the uncorrected image pixel values of the output of each frame; and a processor ( 24 ) for calculating the individualized specific correction function for each of the uncorrected image pixel values of each frame, the specific calibration correction for each image pixel value ( 47 ) of said normalized image data being derived from a plurality of corrected individual single frame image pixel values ( 36 ) of said multiple different frames corrected by said specific correction functions.