this invention relates to a method for improving a digital image for displaying an improved image on a display . according to the method , an instantaneous property of the display ; a property of the digital image ; and parameters for an image processing method are determined . the parameters are determined at least partly on the basis of the instantaneous property of the display , and the property of the digital image . then the digital image is processed by means of the image processing method , while applying the parameters . the invention also relates to a mobile device as well as a display unit , which are arranged to employ the concept of the method .