The execution times for the I-, P-, and B-frames are as f ollows: t
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چکیده
tI-frame = 2*tDCT + tVLC tP-frame = tME/C + tVLC(mv) + 2*tDCT tB-frame = 2*tME/C + tVLC(mv) + tDCT We note here that P-frame coding requires only forward (or backward) prediction, and hence, only one ME/C operation is performed. However, B-frame encoding involves bi-directional interpolation, and thus, requires 2 ME/C operations. We also note that the I(or P-) frame performs DCT both on the frame data (or DFD) and for the reconstructed frame, therefore, requires 2 DCT operations.
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تاریخ انتشار 2007