Optimal bit allocation in HEVC for real-time video communications
Refereed conference paper presented and published in conference proceedings


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AbstractRecently, the Lagrange multiplier λ based rate control has been developed in the latest HEVC (High Efficiency Video Coding) codec. It is revealed that while such a rate control approach successfully guarantees a designated bit-rate, the optimal bit allocation has not been investigated or established in the λ-domain. To enhance the overall performance, we propose a novel linear relationship between distortion and λ. With this distortion model, we deduce a closed-form solution to minimize the distortion while satisfying a given rate regulation at the coding tree unit level. Extensive simulation results show that our method can achieve an average 0.20 dB improvement in the low-delay communications.
All Author(s) ListWang M., Ngan K.N.
Name of ConferenceIEEE International Conference on Image Processing, ICIP 2015
Start Date of Conference27/09/2015
End Date of Conference30/09/2015
Place of ConferenceQuebec City
Country/Region of ConferenceCanada
Detailed descriptionorganized by IEEE,
Year2015
Month12
Day9
Volume Number2015-December
Pages2665 - 2669
ISBN9781479983391
ISSN1522-4880
LanguagesEnglish-United Kingdom
Keywordsbit allocation, HEVC, Lagrange multiplier, Rate control, λ-domain

Last updated on 2020-22-10 at 01:14