1. Stereoscopic device comprising: a sensor assembly having an optical axis, for detecting a sequence of alternating stereoscopic images of an object; a movement detector, detecting movements of said sensor assembly perpendicular to the optical axis, relative to said object, an average of said movements being constant and defining a location of origin; and a processing unit connected to said sensor assembly and to said movement detector, wherein said processing unit selects corresponding portions of said alternating stereoscopic images, according to a signal received from said movement detector and compensates for detected movements, thereby producing a visually stable sequence of display images; wherein said visually stable sequence of display images comprises a plurality of sub-matrices, each one of said sub-matrices is selected from a respective one of said stereoscopic images, each one of said sub-matrices is located at a distance equal to a respective one of said movements from said location of origin, in a direction opposite to said respective movement, relative to said location of origin, and wherein each one of said display images has a predetermined and constant area size, the area size being smaller than that of each of said detected stereoscopic images.