Pyramid-based Image Interpolation

Abstract

A technique for better reconstruction of a distorted region in an image using Pyramid-based image interpolation is presented in this paper. The central idea is to construct the image pyramid, so that the apex of the pyramid has a minimized distorted region. The reconstruction of the original image starts from the apex of the pyramid. Each time, the pixels in the distorted region are recovered using bilinear interpolation technique. Since the distorted pixels in the image at the apex of the pyramid have maximal undistorted neighbors, the accuracy of reconstruction is enhanced. Thus the bottom-up approach proposed by this paper results in improved image reconstruction when compared to top-down technique due to the above mentioned higher availability of un distorted pixels in the neighborhood of a distorted pixel.