STATISTIC IMAGE IMPROVING METHOD, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD

摘要

The present invention relates to image enhancement by exploiting statistical properties of reference images. In particular, images may be sharpened by reconstructing missing frequency components in accordance with statistical constraints that are determined from higher order statistical properties of a reference image that corresponds to the difference of the original image and a lowpass filtered version thereof. This form of statistical image enhancement may also be applied to image and video coding in order to achieve superior image qualities at higher compression gains by transmitting statistical properties of the coding error together with the encoded images.