Adaptive stopping strategies for fast intra mode decision in HEVC


Research output: Journal PublicationsJournal Article (refereed)peer-review

21 Citations (Scopus)


Fast intra mode decision strategies are proposed to overcome the brute force mode decision for the coding unit (CU) in High Efficiency Video Coding (HEVC). The proposed work improves the rough-mode-decision (RMD) by initializing the candidate intra mode list using the fusion of the Hadamard-cost and the statistical-inference formed using spatial/ temporal correlations. Then an early termination is predicted using optimal stopping theory that addresses early decision for a generic class of decision problems. Subsequently, a novel RD-cost prediction model is developed for early termination that is based on the RD-cost variation in the neighboring CUs with-respect-to their co-located CUs. Experimental results demonstrate that the RMD module of HEVC and the state-of-the-art fast intra mode prediction published method are outperformed by saving up to 0.61% and 0.91% Bjøntegaard delta bit rate (BDBR) on average, respectively.
Original languageEnglish
Pages (from-to)41275
JournalJournal of Visual Communication and Image Representation
Early online date20 Dec 2017
Publication statusPublished - Feb 2018
Externally publishedYes

Bibliographical note

This work is partially supported by RGC General Research Fund (GRF) 9042489 (CityU 11206317), 9042322 (CityU 11200116) and Chinese NSF 61672443 .


  • Early mode decision
  • HEVC
  • Intra mode
  • RDOQ
  • RMD
  • Sum of absolute difference
  • Video coding
  • Video coding


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