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Coding unit complexity-based predictions of coding unit depth and prediction unit mode for efficient HEVC-to-SHVC transcoding with quality scalability

Yeh, Chia-Hung ; Tseng, Wen-Yu ; Kang, Li-Wei ; Lee, Cheng-Wei ; Muchtar, Kahlil ; Chen, Mei-Juan

Journal of Visual Communication and Image Representation, August 2018, Vol.55, pp.342-351 [Tạp chí có phản biện]

ISSN: 1047-3203 ; E-ISSN: 1095-9076 ; DOI: 10.1016/j.jvcir.2018.06.008

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  • Nhan đề:
    Coding unit complexity-based predictions of coding unit depth and prediction unit mode for efficient HEVC-to-SHVC transcoding with quality scalability
  • Tác giả: Yeh, Chia-Hung ; Tseng, Wen-Yu ; Kang, Li-Wei ; Lee, Cheng-Wei ; Muchtar, Kahlil ; Chen, Mei-Juan
  • Chủ đề: Hevc (High Efficiency Video Coding) ; Shvc (Scalability Extension of Hevc) ; Video Transcoding ; Scalable Video Coding ; Early Termination ; Coding Unit Complexity ; Engineering ; Journalism & Communications
  • Là 1 phần của: Journal of Visual Communication and Image Representation, August 2018, Vol.55, pp.342-351
  • Mô tả: To access, purchase, authenticate, or subscribe to the full-text of this article, please visit this link: http://dx.doi.org/10.1016/j.jvcir.2018.06.008 Byline: Chia-Hung Yeh (a,b), Wen-Yu Tseng (b), Li-Wei Kang [lwkang@yuntech.edu.tw] (c,*), Cheng-Wei Lee (b), Kahlil Muchtar (d,e), Mei-Juan Chen (f) Keywords HEVC (high efficiency video coding); SHVC (scalability extension of HEVC); Video transcoding; Scalable video coding; Early termination; Coding unit complexity Highlights * Novel unit prediction method for efficient HEVC-to-SHVC transcoding is proposed. * Two proposed techniques are early termination and adaptive confidence interval. * We are among the first to propose a fast HEVC-to-SHVC transcoding framework. * Proposed method reduces encoding time of SHVC by 74.14% almost without quality loss. Abstract To support good video quality of experiences in heterogeneous environments, transcoding an existed HEVC (high efficiency video coding) video bitstream to a SHVC (scalability extension of HEVC) bitstream with quality scalability is highly required. A straightforward way is to first fully decode the input HEVC bitstream and then fully re-encode it with the SHVC encoder, which requires a tremendous computational complexity. To solve the problem, in this paper, a coding unit complexity (CUC)-based prediction method for predictions of CU (coding unit) depth and PU (prediction unit) mode for efficient HEVC-to-SHVC transcoding with quality scalability is proposed to significantly reduce the transcoding complexity. The proposed method contains two prediction techniques, including (i) early termination and (ii) adaptive confidence interval, and predicts the CU depth and PU mode relying on the decoded information from the input HEVC bitstream. Experimental results have shown that the proposed method significantly outperforms the traditional HEVC-to-SHVC method by 74.14% on average in reductions of encoding time for SHVC enhancement layer. Author Affiliation: (a) Department of Electrical Engineering, National Taiwan Normal University, Taipei, Taiwan (b) Department of Electrical Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan (c) Graduate School of Engineering Science and Technology-Doctoral Program, Department of Computer Science and Information Engineering, and Artificial Intelligence Recognition Industry Service Research Center, National Yunlin University of Science and Technology, Yunlin, Taiwan (d) Department of Electrical and Computer Engineering, Syiah Kuala University, Aceh, Indonesia (e) Nodeflux, Inc., Jakarta, Indonesia (f) Department of Electrical Engineering, National Dong Hwa University, Hualien, Taiwan * Corresponding author. Article History: Received 3 May 2017; Revised 5 April 2018; Accepted 8 June 2018 (footnote)[white star] This paper has been recommended for acceptance by Siwei Ma.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 1047-3203 ; E-ISSN: 1095-9076 ; DOI: 10.1016/j.jvcir.2018.06.008

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