| 摘要 |
PURPOSE: A method for determining B picture mode at H.26L video coding system is provided to deduct 16XQPO(QP) when calculating SAD(Sum of Absolute Difference) values for reducing the bit ratio and improving the decoding performance of image data. CONSTITUTION: A method for determining B picture mode at H.26L video coding system includes the steps of setting an initial value of SAD in consideration of an overhead bit with respect to five estimation modes(S1), operating distortion with respect to the respective modes when computing the estimation error measurement operation formula SAD, particularly by deducting 16XQPO(QP) in order to increase the selection possibility of direct mode(S2), and selecting a mode having a smallest SAD value as the mode for B picture coding(S3). |
