1. A method for up sampling images in a reduced resolution video, wherein each image I(x, y) stores depths d at pixel locations (x, y), comprising a processor for performing steps of the method, comprising the steps of: scaling up, each depth image to produce a corresponding up-scaled image; applying image dilation to each up-scaled image to produce a corresponding dilated image; applying a median filter to each dilated image to produce a corresponding median image; applying image erosion to each median image to produce a corresponding eroded image; and applying a min-max filter to each eroded image to produce a corresponding up-sampled image.