1. A system for presentation of image comprising: (a) at least a pair of images of a scene from different viewpoints; (b) selectively presenting images on a display from said different viewpoints such that a viewer observes said scene in a three dimensional manner without glasses for said viewer; (c) wherein at least one of said images is modified based upon a filter that is based upon the human visual system in order to reduce rocking artifacts to a level less than they would otherwise have been had said filter not modified said at least one of said images; (d) wherein said pair of is based upon a two dimensional image and a depth map; (e) wherein said two dimensional image and depth map are used to render two dimensional views; (f) wherein at least a pair of images from said two dimensional views are used for said selective presenting images on said display; (g) wherein said selectively presenting is based upon a viewpoint selector; (h) wherein a threshold elevation image is calculated based upon at least one of said two dimensional views; (i) wherein said threshold elevation image is based upon a spatiotemporal filter; (j) wherein said spatiotemporal filter includes a contrast sensitivity function; (k) wherein said threshold elevation image uses a threshold to determine a filtered pixel value; (l) wherein said threshold includes a disparity measure.