## 摘要

In the previous paper [14], we proposed a zero-block intermode decision algorithm for H.264 video coding based upon the number of zero-blocks of 4 × 4 DCT coefficients between the current macroblock and the co-located macroblock. The proposed algorithm can achieve significant improvement in computation, but the computation performance is limited for high bit-rate coding. To improve computation efficiency, in this paper, we suggest an enhanced zero-block decision algorithm, which uses an early zero-block detection method to compute the number of zero-blocks instead of direct DCT and quantization (DCT/Q) calculation and incorporates two adequate decision methods into semi-stationary and nonstationary regions of a video sequence. In addition, the zero-block decision algorithm is also applied to the intramode prediction in the P frame. The enhanced zero-block decision algorithm brings out a reduction of average 27% of total encoding time compared to the zero-block decision algorithm.

原文 | ???core.languages.en_GB??? |
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頁（從 - 到） | 524-533 |

頁數 | 10 |

期刊 | IEEE Transactions on Image Processing |

卷 | 18 |

發行號 | 3 |

DOIs | |

出版狀態 | 已出版 - 2009 |