A new rate-quantization model for H.264/AVC low-delay rate control

  • Authors:

  • Junhui Hou;Shuai Wan;Zhan Ma;Fuzheng Yang;Lap-Pui Chau

  • Affiliations:

  • School of Electrical and Electronics Engineering, Nanyang Technological University, Singapore, School of Electronics and Information, Northwestern Polytechnical University, Xi'an, China;School of Electronics and Information, Northwestern Polytechnical University, Xi'an, China;Dallas Technology Lab, Samsung, Richardson, TX;State Key Laboratory of ISN, Xidian Universtity, Xi'an, China;School of Electrical and Electronics Engineering, Nanyang Technological University, Singapore

  • Venue:
  • PCM'12 Proceedings of the 13th Pacific-Rim conference on Advances in Multimedia Information Processing
  • Year:
  • 2012

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Abstract

In this paper, we present a new rate-quantization (R-Q) model for H.264/AVC low-delay rate control. Our rate model is a power function of the quantization stepsize, which is derived through theoretical analysis assuming the Laplacian distributed source. Model parameters are content adaptive and updated frame by frame. Proposed R-Q model is implemented on H.264/AVC reference software JM17.2 to evaluate the performance, where accurate quantization stepsize is selected for each frame according to the target bit rate. As compared to the most recent published work [5] and well-known R-Q model adopted in JM [13], we have shown that almost 2x performance improvement in terms of the bits mismatch error.