An adaptive resolution rate control method for intra coding in HEVC

Brett Hosking, Dimitris Agrafiotis, David Bull, Nick Easton

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

8 Citations (Scopus)
302 Downloads (Pure)

Abstract

Previous work has shown that spatial resampling can improve rate-distortion performance by providing a higher and more consistent level of video quality at low bitrates. Rate control aims to regulate the video bitrate in accordance to the bit budget. While this is a well studied problem in the single resolution case, very little progress has been made on the adaptive resolution case. In this paper we present an enhanced method of rate control for intra coding that allows the algorithm to learn from previously coded frames and make more accurate predictions, resulting in a lower average mismatch ratio. Our main contribution, however, lies in our adaptive resolution approach where the best scale factor is selected after prediction of the best Quantisation Parameter (QP). We show that our method closely conforms to the bit budget and provides a more stable bitrate. The likelihood of frame skipping is therefore reduced and a more consistent level of video quality is provided compared to standard single resolution methods.
Original languageEnglish
Title of host publication2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2016)
Subtitle of host publicationProceedings of a meeting held 20-25 March 2016, Shanghai, China
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1486-1490
Number of pages5
ISBN (Electronic)9781479999873
ISBN (Print)9781479999897
DOIs
Publication statusPublished - Jul 2016
Event2016 (41st) IEEE Conference on Acoustics, Speech and Signal Processing - Shanghai International Convention Center/Oriental Riverside Hotel, Shanghai, China
Duration: 20 Mar 201625 Mar 2016
Conference number: 41
http://www.icassp2016.org/

Conference

Conference2016 (41st) IEEE Conference on Acoustics, Speech and Signal Processing
Abbreviated titleICASSP
CountryChina
CityShanghai
Period20/03/1625/03/16
Internet address

Keywords

  • Adaptive
  • Resolution
  • Rate
  • Intra
  • HEVC

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