1. An improvement in autostereoscopic image display comprising forming vertically-oriented image stripes on an imaging surface in groups, each group consisting of two or more stripes, each stripe being a portion of two or more images from different perspectives, arranged so that the leftmost stripe in the group is from the image with the rightmost point of view, the next to leftmost stripe is from the image with the next to rightmost point of view and proceeding in this order to the rightmost stripe in the group which is from the image with the leftmost point of view, placing an opaque mask with vertically-oriented slits between the imaging surface and the observer with the slits so positioned that the left eye is limited to viewing one stripe in each group and the right eye is limited to viewing a different stripe in each group with image content from a more rightward perspective than the stripe the left eye is viewing such as to provide a stereoscopic impression, said improvement comprising interposing dark zones between image stripes in each group, the dark zones having a width approximately equal to the projected width of the slits from the observer's vantage point, with the result that the observer cannot view any two adjacent image stripes simultaneously from a single view position and, consequently, perceive an unwanted double image.