Interpolation apparatus and method for motion vector compensation

摘要

An interpolation method and apparatus for motion vector compensation are provided. The interpolation method includes calculating a horizontal sum of values of a plurality of half-pixels adjacent to or near a predetermined quarter-pixel in the horizontal direction by giving predetermined weights to each of the half-pixels, and adding the results; calculating a vertical sum of values of a second plurality of half-pixels adjacent to or near the quarter-pixel in the vertical direction by giving predetermined weights to each of the half-pixels, and adding the results; and calculating an integer value of the quarter-pixel value using the vertical and horizontal sums. According to an aspect of the invention, more consistent and reliable compensation for error in a motion vector may be achieved, thereby increasing the efficiency of motion vector compensation.