Method of extracting average current and method of compensating image information including the same

An apparatus, comprising:

• an on-pixel calculator configured to calculate an on-pixel ratio based on gamma information corresponding to image information, the on-pixel ratio being based on turned-on pixels of a plurality of pixels in a display panel;
• a maximum current information provider configured to provide maximum current information based on a dimming level of the display panel using a max current look-up table, the maximum current information corresponding to the dimming level of the display panel being stored in the max current look-up table;
• an average current calculator configured to calculate an average current of the display panel by multiplying the on-pixel ratio and a maximum current value corresponding to the maximum current information;
• and
• a pixel information provider configured to provide pixel average current information for each of the pixels, the pixel average current information being determined based on the average current of the display panel using a pixel average current look-up table.