教師資料查詢 | 類別: 會議論文 | 教師: 黃心嘉 Hwang Shin-jia (瀏覽個人網頁)

標題: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
語言英文
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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