An image compensation apparatus (200, 300) for a display device comprising a light emitting unit, the image compensation apparatus (200, 300) comprising: a control parameter generation module configured to receive an original image; an image compensation module (230, 330) 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 of the original image 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 (230, 330) configured to output the converted image information obtained from the image compensation module (230, 330) to the light emitting unit, CHARACTERIZED IN THAT the control parameter generation module is configured to determine a first pixel value threshold at a first luminance value, in correspondence with the decrease in supply or consumption of power of the light emitting unit; the image compensation module (230, 330) is configured to adapt the received image information per pixel in correspondence with the decrease in supply or consumption of power of the light emitting unit, wherein, based on a comparison of a luminance value per pixel of the received image information with the first pixel value threshold, the image compensation module is configured to perform no compensation resulting in a change of brightness and contrast properties of the original image on luminance values of pixels in received image signals below the first pixel value threshold defining a low gray-scale area in the original image and on luminance values higher than a predetermined second pixel value threshold defining a very high gray-scale area in the original image, and to increase luminance values relative to received image information per pixel above the first pixel value threshold and below the second pixel value threshold defining medium- and high-grayscale areas in the original image used to enhance brightness. a control parameter generation module configured to receive an original image; an image compensation module (230, 330) 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 of the original image 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 (230, 330) configured to output the converted image information obtained from the image compensation module (230, 330) to the light emitting unit, CHARACTERIZED IN THAT the control parameter generation module is configured to determine a first pixel value threshold at a first luminance value, in correspondence with the decrease in supply or consumption of power of the light emitting unit; the image compensation module (230, 330) is configured to adapt the received image information per pixel in correspondence with the decrease in supply or consumption of power of the light emitting unit, wherein, based on a comparison of a luminance value per pixel of the received image information with the first pixel value threshold, the image compensation module is configured to perform no compensation resulting in a change of brightness and contrast properties of the original image on luminance values of pixels in received image signals below the first pixel value threshold defining a low gray-scale area in the original image and on luminance values higher than a predetermined second pixel value threshold defining a very high gray-scale area in the original image, and to increase luminance values relative to received image information per pixel above the first pixel value threshold and below the second pixel value threshold defining medium- and high-grayscale areas in the original image used to enhance brightness.