Method of and apparatus for estimating noise of input image based on motion compensation, method of eliminating noise of input image and encoding video using the method for estimating noise of input image, and recording media having recorded thereon program for implementing those methods

摘要

A method of and an apparatus for estimating noise based on motion compensation. The method includes estimating a motion vector for a predetermined-size current block of the input image, calculating a difference between a block corresponding to the estimated motion vector and the current block, comparing the calculated difference with a predetermined threshold value, selectively updating a noise estimation value for estimation of the noise of the input image according to a result of the comparison, generating information about the noise based on the selectively updated noise estimation value.