NDLI: Fast coding unit selection and motion estimation algorithm based on early detection of zero block quantified transform coefficients for high-efficiency video coding standard

Content Provider	IET Digital Library
Author	Kibeya, Hassan Belghith, Fatma Ayed, Mohammed Ali Ben Masmoudi, Nouri
Abstract	High-efficiency video coding (HEVC) is the newest video coding standard developed by the joint video team, consisting of ITU-T video coding experts group and ISO/IEC Moving Picture Experts Group. The HEVC standard has aggregated an exhaustive algorithm for mode decision based on a recursive quad-tree structured coding tree block. Moreover, several specific features have been incorporated into the motion estimation (ME) process to improve its coding efficiency. However, they resulted in very high computational complexity. To accelerate the encoding process, fast mode decision algorithms for the partitioning module and also for the ME module were proposed in this study. These algorithms are based on early zero block detection technique. To improve the efficiency of these algorithms, an overall algorithm which combines the two techniques has been implemented. The performance of the proposed algorithm was checked through a comparative analysis in terms of encoding time and compression rate. Compared to HEVC test model 10.0, the authors’ proposed algorithms bring a great reduction of the HEVC complexity encoder with a saving time, which can reach 25% in average for different tested videos and a slight coding loss in terms of image quality and compression rate.
Starting Page	371
Ending Page	380
Page Count	10
ISSN	17519659
Volume Number	10
e-ISSN	17519667
Issue Number	Issue 5, May (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-ipr/10/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-ipr.2015.0381
Journal	IET Image Processing
Publisher Date	2016-05-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Coding Efficiency Coding Loss Combinatorial Mathematics Compression Rate Computational Complexity Data Compression Early-zero-block Detection Technique Encoding Time Fast Coding Unit Selection-motion Estimation Algorithm Fast Mode Decision Algorithm HEVC Complexity Encoder HEVC Standard HEVC Test Model 10.0 High-efficiency Video Coding Standard IEC Standards Image And Video Coding Image Quality ISO Standards ISO-IEC Moving Picture Expert Group ITU-T Video Coding Expert Group ME Module ME Process Mode Decision Motion Estimation Partitioning Module Quadtrees Recursive Quad-tree Structured Coding Tree Block Video Coding Video Signal Processing Video Team Zero-block Quantified Transform Coefficient Early-detection
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering Computer Vision and Pattern Recognition Software

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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