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Efficient QP-per-frame Assignment Method for Low-delay HEVC Encoder
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  • Journal title : Journal of Broadcast Engineering
  • Volume 21, Issue 3,  2016, pp.349-356
  • Publisher : The Korean Institute of Broadcast and Media Engineers
  • DOI : 10.5909/JBE.2016.21.3.349
 Title & Authors
Efficient QP-per-frame Assignment Method for Low-delay HEVC Encoder
Park, Sang-hyo; Jang, Euee S.;
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 Abstract
In this paper, we propose an efficient assignment method that assigns quantization parameter (QP) in accordance with group of picture (GOP) structure given in HEVC encoder. Each video frames can have difference QP values based on given GOP configuration for HEVC encoding. Particularly, for important frames we can assign low QP values, and vice versa. However, there has not been thorough investigation on efficient QP assignment method by far. Even in HEVC reference software encoder, only monotonic QP assignment method is employed. Thus, the proposed method assign adaptive QP values to each GOP so that temporal dynamic activity between GOPs can be exploited. Through the experiment, the proposed method showed a 7.3% gain of compression performance in terms of BD-rate compared to HEVC test model (HM) in low-delay configuration, and outperformed the existing QP assignment study on average.
 Keywords
HEVC;QP assignment;QP variation;QP fluctuation;Adaptive QP;GOP;
 Language
Korean
 Cited by
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