Advertisement

Intra Prediction

  • Youn-Long Steve Lin
  • Chao-Yang Kao
  • Huang-Chih Kuo
  • Jian-Wen Chen
Chapter

Abstract

Intra prediction is the first process of H.264/AVC intra encoding. It predicts a macroblock by referring to its neighboring macroblocks to eliminate spatial redundancy. There are 17 prediction modes for a macroblock: nine modes for each of the 16 luma 4 ×4 blocks, four modes for a luma 16 ×16 block, and four modes for each of the two chroma 8 ×8 blocks. Because there exists great similarity among equations of generating prediction pixels across prediction modes, effective hardware resource sharing is the main design consideration. Moreover, there exists a long data-dependency loop among luma 4 ×4 blocks during encoding. Increasing parallelism and skipping some modes are two of the popular methods to design a high-performance architecture for high-end applications. However, to increase throughput will require more hardware area and to skip some modes will degrade video quality. We will present a novel VLSI implementation for intra prediction in this chapter.

Keywords

Prediction Mode Plane Mode Intra Prediction Reference Pixel Seed Pixel 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. 1.
    Al A, Rao BP, Kudva S, Babu S, Suman D, Rao A (2004) Quality and complexity comparison of H.264 intra mode with JPEG2000 and JPEG. In: Proceedings of IEEE international conference on image processing, Singapore, October 2004, pp 525–528Google Scholar
  2. 7.
    Cheng C-C, Chang T-S (2005) Fast three step intra prediction algorithm for 4 ×4 blocks in H.264. In: Proceedings of IEEE international symposium on circuits and systems, Kobe, Japan, May 2005, pp 1509–1512Google Scholar
  3. 21.
    Huang Y-W, Hsieh B-Y, Chen T-C, Chen L-G (2005) Analysis, fast algorithm, and VLSI architecture design for H.264/AVC intra frame coder. IEEE Trans Circuits Syst Video Technol 15(3):378–401Google Scholar
  4. 29.
    Ku C-W, Cheng C-C, Yu G-S, Tsai M-C, Chang T-S (2006) A high-definition H.264/AVC intra-frame codec IP for digital video and still camera applications. IEEE Trans Circuits Syst Video Technol 16(8):917–928Google Scholar
  5. 32.
    Kao Y-C, Kuo H-C, Lin Y-T, Hou C-W, Li Y-H, Huang H-T, Lin Y-L (2006) A high-performance VLSI architecture for intra prediction and mode decision in H.264/AVC video encoding. In: Proceedings of IEEE Asia-Pacific conference on circuits and systems, Singapore, December 2006, pp 562–565Google Scholar
  6. 46.
    Li D-W, Ku C-W, Cheng C-C, Lin Y-K, Chang T-S (2007) A 61MHz 72k gates 1,280 ×720 30fps H.264 intra encoder. In: Proceedings of IEEE international conference on acoustics, speech and signal processing, Hawaii, USA, April 2007, pp (II) 801–804Google Scholar
  7. 54.
    Meng B, Au O-C (2003) Fast intra-prediction mode selection for 4A blocks in H.264. In: Proceedings of IEEE international conference on acoustics, speech, and signal processing, Hong Kong, China, April 2003, pp (III) 389–392Google Scholar
  8. 61.
    Suh K, Park S, Cho H (2005) An efficient hardware architecture of intra prediction and TQ/IQIT module for H.264 encoder. Electron Telecommun Res Inst J 27(5):511–524Google Scholar
  9. 78.
    Wang J-C, Wang J-F, Yang J-F, Chen J-T (2007) A fast mode decision algorithm and its VLSI design for H.264/AVC intra-prediction. IEEE Trans Circuits Syst Video Technol 17(10):1414–1422Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Youn-Long Steve Lin
    • 1
  • Chao-Yang Kao
    • 1
  • Huang-Chih Kuo
    • 1
  • Jian-Wen Chen
    • 1
  1. 1.Dept. Computer ScienceNational Tsing Hua UniversityHsinChuTaiwan R.O.C.

Personalised recommendations