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Rate control for HEVC intra-coding based on piecewise linear approximations
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Sanchez Silva, Victor (2018) Rate control for HEVC intra-coding based on piecewise linear approximations. In: IEEE International Conference on Acoustics, Speech, and Signal Processing, Calgary, Alberta, Canada, 15-20 Apr 2018. Published in: IEEE International Conference on Acoustics, Speech, and Signal Processing doi:10.1109/ICASSP.2018.8461970 ISSN 2379-190X.
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WRAP-Rate-control-for-HEVC-intra-coding-Silva-2017.pdf - Accepted Version - Requires a PDF viewer. Download (1269Kb) | Preview |
Official URL: https://doi.org/10.1109/ICASSP.2018.8461970
Abstract
This paper proposes a rate control (RC) algorithm for intra-coded sequences (I-frames) within the context of block-based predictive transform coding (PTC) that employs piecewise linear approximations of the rate-distortion (RD) curve of each frame. Specifically, it employs information about the rate (R) and distortion (D) of already compressed blocks within the current frame to linearly approximate the slope of the corresponding RD curve. The proposed algorithm is implemented in the High-Efficiency Video Coding (HEVC) standard and compared with the current HEVC RC algorithm, which is based on a trained rate lambda (R-λ) model. Evaluations on a variety of intra-coded sequences show that the proposed RC algorithm not only attains the overall target bit rate more accurately than the current RC algorithm but is also capable of encoding each I-frame at a more constant bit rate according to the overall bit budget, thus avoiding high bit rate fluctuations across the sequence.
Item Type: | Conference Item (Paper) | ||||||
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Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Computer Science | ||||||
Library of Congress Subject Headings (LCSH): | Digital video -- Standards, Video compression -- Standards, Coding theory, Video compression | ||||||
Journal or Publication Title: | IEEE International Conference on Acoustics, Speech, and Signal Processing | ||||||
Publisher: | IEEE | ||||||
ISSN: | 2379-190X | ||||||
Official Date: | 13 September 2018 | ||||||
Dates: |
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DOI: | 10.1109/ICASSP.2018.8461970 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Date of first compliant deposit: | 16 February 2018 | ||||||
Date of first compliant Open Access: | 19 February 2018 | ||||||
Conference Paper Type: | Paper | ||||||
Title of Event: | IEEE International Conference on Acoustics, Speech, and Signal Processing | ||||||
Type of Event: | Conference | ||||||
Location of Event: | Calgary, Alberta, Canada | ||||||
Date(s) of Event: | 15-20 Apr 2018 |
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