Luminance interpolating method of H.264 decoder based on symmetry of interpolation algorithm

• Main Authors: SONG YUKUN, JIA JINGHUA, CHENG XIANWEN, DU GAOMING, ZHANG DUOLI, GENG LUOFENG
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2011
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

The invention discloses a luminance interpolating method of an H.264 decoder based on symmetry of an interpolation algorithm, which is characterized by judging the type of an interpolation point according to the interpolation position; if the type of the interpolation point is a horizontal interpolation point, converting the type of the horizontal interpolation point into a vertical interpolationpoint of a transposed matrix by utilizing the symmetry of the matrix and carrying out transposition processing on a 9*9 matrix; if the type of the interpolation point is the type of the vertical interpolation point, calculating the interpolation point just by one of the vertical interpolation point and the horizontal interpolation point or a horizontal and vertical interpolation point, and accordingly, a horizontal half-pixel interpolator and a horizontal and vertical half-pixel interpolator can be multiplexed. A horizontal half-pixel interpolation filter and a horizontal and vertical half-pixel interpolation filter a