IMAGE COMPENSATION APPARATUS AND METHOD

The invention relates to an image compensation apparatus in use being connected to a light emitting unit, the image compensation apparatus comprising: a control parameter generation module configured to receive an original image; an image compensation module connected to the control parameter generation module, which, in case of a decrease in supply or consumption of power of the light emitting unit, when the light emitting unit is driven at less than maximum power thereof, is configured to convert the received image information in case of the decrease in supply or consumption of power of the light emitting unit; and an output connected to the image compensation module to output image information obtained from the image compensation module to the light emitting unit, wherein the control parameter generation module is configured to determine a threshold (TH) at a luminance value above zero, in correspondence with the decrease in supply or consumption of power of the light emitting unit; the image compensation module is configured to convert the received image information per pixel in correspondence with the decrease in supply or consumption of power of the light emitting unit and with a comparison of a luminance value per pixel of the received image information with the threshold (TH) by performing no compensation on luminance values of pixels in received image signals below the threshold (TH) for a low gray-scale area in the original image to enhance contrast and at a maximum luminance value, and by increasing luminance values relative to received image information per pixel above the threshold (TH) and below the maximum luminance level for medium- and high-grayscale areas in the original image to enhance brightness.