NDLI: Efficient HEVC Scheme Using Motion Type Categorization

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Efficient HEVC Scheme Using Motion Type Categorization

Content Provider	ACM Digital Library
Author	Paul, Manoranjan Murshed, Manzur Podder, Pallab Kanti
Abstract	High Efficiency Video Coding (HEVC) standard introduces a number of innovative tools which can reduce approximately 50% bit-rate compared to its predecessor H.264/AVC at the same perceptual video quality whereas the computational time has increased multiple times. To reduce the encoding time while preserving the expected video quality has become a real challenge today for video transmission and streaming especially using low-powered devices. Motion estimation (ME) and motion compensation (MC) using variable-size blocks (i.e., intermodes) require 60-80% of total computational time. In this paper we propose a new efficient intermode selection technique based on phase correlation and incorporate into HEVC framework to predict ME and MC modes and perform faster intermode selection based on three dissimilar motion types in different videos. Instead of exploring all the modes exhaustively we select a subset of modes using motion type and the final mode is selected based on the Lagrangian cost function. The experimental results show that compared to HEVC the average computational time can be downscaled by 34% while providing the similar rate-distortion (RD) performance.
Starting Page	41
Ending Page	42
Page Count	2
File Format	PDF
ISBN	9781450332811
DOI	10.1145/2676652.2683462
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2014-12-02
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Phase correlation Hevc Intermode selection Motion types
Content Type	Text
Resource Type	Article

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