1. A method of processing a radiographic image of a scanned object, comprising: performing in integer format a pixel offset correction on the radiographic image using unsigned saturation arithmetic to produce an image in integer format having negative value pixels clipped to a value of zero; converting the resulting pixels to floating point format and multiplying the converted pixels by a positive floating point gain factor; converting the resulting pixels to integer format and clamping the converted pixel values to a maximum value using saturation arithmetic; performing in integer format non-functional pixel correction and clamping the resulting pixel values to a maximum value using saturation arithmetic; and mapping in integer format the resulting pixel value to a palette index using a lookup table to establish an output pixel intensity having one of many intensity levels.