A solution to the dynamic range problem of pixel values in color image enhancement

The whole process of image enhancement is rearranging the pixel values according to different criteria. The commonly used display range for color images is 8 bits per primary per pixel. In the enhanced image, those pixels, with primary values out of the 8-bit range, are simply clipped on the boundary for display. This process loses the details in some areas and present unnatural appearance. The paper proposes a refinement method which can retrieve the details clipped by the constraint of the display range while presenting the details enhanced by the enhancement method