A Fast Intra Prediction Based on Haar Transform in H.264/AVC
學年 98
學期 1
發表日期 2009-12-03
作品名稱 A Fast Intra Prediction Based on Haar Transform in H.264/AVC
作品名稱（其他語言）
著者 Yen, Shwu-Huey; Lin, meng-ju; Hwan, shin-jia; Li, tai-kuang
作品所屬單位 淡江大學資訊工程學系
出版者 Taipei : Institute of electrical and electronics engineers (IEEE)
會議名稱 JCPC 2009 Joint Conferences on Pervasive Computing
會議地點 Taipei, Taiwan
摘要 H.264/AVC is one of the state of the art in video compressing standards. It has advantages of low bit-rate and high image quality. However, the omplexity of H.264/AVC encoder limits applications in the real time video communication. In this study, a fast intra prediction with Haar transform algorithm (FIPHTA) is proposed to simplify the complexity of luma intra prediction. For each luma macroblock (MB), a Haar transform is first executed. By observing LL coefficients, this MB will be classified as 16-MB, I4-MB, or both. An I16-MB indicates that this MB is smooth and only Intra 16×16 (I16) prediction modes are to be considered. An I4-MB indicates that this MB is textured and only Intra 4×4 (I4) prediction modes are to be considered. And the rest of MBs (both) have to consider both prediction modes as in the standard H.264/AVC. Next, to choose an I16 prediction mode for a MB, the vertical and horizontal energies of the LL coefficients are calculated to reduce candidate modes. Similarly, the pixel-based vertical and horizontal energies are calculated for a 4×4 block to reduce I4 candidate modes. The simulation showed that the proposed algorithm can maintain the similar mode selection results comparing to the full search algorithm of H.264 but with a remarkable computation deduction.
關鍵字 H.264/AVC;Haar transform;Intra predictio
語言 en
收錄於
會議性質 國際
校內研討會地點 淡水校園
研討會時間 20091203~20091205
通訊作者
國別
公開徵稿 Y
出版型式
出處 Proceedings of the 2009 joint conferences on pervasive computing, pp.161-166
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