1. A television comprising a display screen, a video enhancement unit coupled to the display screen and having a configuration to receive and process image frames of a video signal and output the processed image frames for display on the display screen, each of the image frames having a plurality of pixels distributed over a plurality of pixel levels, and a control unit coupled to the video enhancement unit, the control unit comprising programmable logic configured to determine for a set of pixels in a received image frame having a first distribution of pixels across a first plurality of pixel levels within a pre-determined range of grey pixel levels the number of pixels corresponding to individual pixel levels within the pre-determined range of grey pixel levels and instruct the video enhancement unit to expand the pixel level distribution of the set of pixels from the first distribution of pixels across the first plurality of pixel levels within the pre-determined range of grey pixel levels to a second distribution of pixels across a second plurality of pixel levels within a pre-determined range of grey pixel levels based on a percent level distribution of the set of pixels within the pre-determined range of grey pixel levels when displaying the image frame on the display screen.