| 摘要 |
A SPATIAL PREDICTION METHOD CAPABLE OF REDUCING THE COMPLEXITY OF SPATIAL PREDICTION INCLUDES: DETECTING AN EDGE (E) OVERLAPPING THE CURRENT BLOCK BY OBTAINING A HORIZONTAL GRADIENT (GY) AND A VERTICAL GRADIENT (GX) BETWEEN PIXELS WITHIN A BLOCK ADJACENT TO THE CURRENT BLOCK (S10); CALCULATING AN INTEGER SLOPE OF THE EDGE (S11); DETERMINING, FOR EACH PIXEL POSITION WITHIN THE CURRENT BLOCK, A SUB-PEL POSITION (450) BEING AN INTERSECTION BETWEEN (I) A LINE THAT HAS THE INTEGER SLOPE AND PASSES THROUGH THE PIXEL POSITION AND (II) A BOUNDARY OF THE ADJACENT BLOCK (S12); AND PREDICTING, FOR EACH PIXEL POSITION, A PIXEL VALUE AT THE PIXEL POSITION (440) BASED ON A PIXEL VALUE INTERPOLATED IN THE SUB-PEL POSITION (S13), WHEREIN THE BOUNDARY OF THE ADJACENT BLOCK IS A ROW OR A COLUMN THAT IS THE CLOSEST TO THE CURRENT BLOCK, AMONG ROWS OR COLUMNS OF PIXELS INCLUDED IN THE ADJACENT BLOCK. |
