Realtime h.264 encoding system using fast motion estimation and mode decision

  • Authors:

  • Byeong-Doo Choi;Min-Cheol Hwang;Jun-Ki Cho;Jin-Sam Kim;Jin-Hyung Kim;Sung-Jea Ko

  • Affiliations:

  • Department of Electronics Engineering, Korea University, Seoul, Korea;Department of Electronics Engineering, Korea University, Seoul, Korea;Department of Electronics Engineering, Korea University, Seoul, Korea;Department of Electronics Engineering, Korea University, Seoul, Korea;Department of Electronics Engineering, Korea University, Seoul, Korea;Department of Electronics Engineering, Korea University, Seoul, Korea

  • Venue:
  • EUC'05 Proceedings of the 2005 international conference on Embedded and Ubiquitous Computing
  • Year:
  • 2005

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Abstract

H.264 provides various useful features such as improved coding efficiency and error robustness. These features enable mobile device to adopt H.264/AVC standard to achieve effective video communications. However, the encoder complexity is greatly increased mainly due to motion estimation (ME) and mode decision. We implemented a realtime H.264 encoding system based on DSP and FPGA chip using the propose scheme to jointly optimize inter mode selection and ME using the multi-resolution analysis. In our paper, we focus on reducing the complexity while maintaining the visual quality output. Experimental results show that the proposed algorithm is over 3 times faster than the existing method while maintaining the coding efficiency and the implemented system. The implemented H.264 encoder meets the common requirement of the real-time video coding [30 frames/sec].