A scene of an image sequence is transmitted that has been compressed using a number of foveation zones, each foveation zone being weighted based on a probability of a viewer looking at a corresponding portion of the first scene. A specularity condition is determined to exist in one of the four images by comparing intensities of the images directly with one another. The user may visit a restaurant or other food service location and may be presented with a menu that includes a variety of menu options. The membrane obtained according to the invention may be functionalized in a targeted adjustable manner and has a high functionalization degree.