1. A method comprising: capturing by an imaging device, an image from a scene having a background and at least one object distinguishable from the background; slicing said image into a plurality of slices, each being a surface within the time-space; repeatedly scanning the scene along a predefined scanning pattern by visiting adjacent slices, one by one, in a specified order; applying an image-to-sound conversion to each object visited along the scanning, so as to provide a sequence of auditory representations of objects in the scene, each auditory representation being indicative of characteristics of its representative object; adjusting the auditory representation of each one of the objects, based on its respective position within the time-space, so that same or similar objects positioned at different locations within the time space are auditory distinguishable from each other; applying an image-to-touch conversion to each object visited along the scanning, so as to provide a sequence of tactile representations of objects in the scene, each tactile representation being indicative of characteristics of its representative object; and combining the auditory and tactile representations so that auditory and tactile representations of the same object are presented to a human user simultaneously.