1. A method for rendering a radiographic image of a subject, the method executed at least in part on a computer and comprising: obtaining image data from an image detector; generating a look-up table for image data processing, wherein the look-up table is generated at least according to information about an image type, an image detector type, and a kVp setting used to expose the radiographic image and according to information about grid use; adjusting image data values of the obtained image data according to the generated look-up table to generate adjusted radiographic image data; applying log conversion and image processing to the adjusted radiographic image data to form enhanced radiographic image data; and rendering the enhanced radiographic image data on a display.