Smart Mechanism for H.264 Reference Frame Selection

T.-Y. Kuo and H.-J. Lu (Taiwan)


H.264, variable block sizes, multiple reference frames, motion estimation, frame selection.


This paper proposed a simple yet effective mechanism to select proper reference frames for H.264 motion estimation. Unlike the traditional video codec, H.264 permits more than one reference frames in the motion estimation. Complicated by the variable block size motion estimation, it would take up a significant encoding complexity to find the best inter coding. Our smart selection mechanism selects the suitable reference frames with a simple test, and only the selected frames should be further searched in variable block size motion estimation. One major advantage of our mechanism is to be able to work with any existing motion search algorithms developed for the traditional single reference frame. The experiment results show the effectiveness of our proposed algorithm.

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