The invention relates to a method for processing an image, adapted for a display comprising a plurality of pixels, comprising the steps of setting, in dependence upon the image content, a portion out of the plurality of pixels to black for obtaining off -pixels thereby reducing the resolution of the display to a predefined value; and sequentially switching the position of the off -pixels over the plurality of pixels comprised by the display. In this way, a possibility for reducing or compensating for image retention in displays is provided.