High resolution standards conversion of low resolution video

Abstract

With the advent of frame grabbers capable of acquiring multiple video frames, a great deal of attention is being directed at creating high-resolution (hi-res) imagery from interlaced or low-resolution (low-res) video. This is a multi-faceted problem, which generally necessitates standards conversion and hi-res reconstruction. Standards conversion is the problem of converting from one spatio-temporal sampling lattice to another, while hi-res image reconstruction involves increasing the spatial sampling density. Also of interest is removing degradations that occur during the image acquisition process. These tasks have all received considerable, yet separate, treatment in the literature. A unifying video formation model is presented which addresses these problems simultaneously. Then, a POCS-based algorithm for generating high-resolution imagery from video is delineated. Results with real imagery are included.