261 0

Adaptive search range adjustment scheme for fast motion estimation in AVC/H.264

Title
Adaptive search range adjustment scheme for fast motion estimation in AVC/H.264
Other Titles
H.264
Author
장의선
Keywords
search range; motion estimation; video coding; AVC/H.264
Issue Date
2011-06
Publisher
SPIE
Citation
OPTICAL ENGINEERING, JUN 2011, 50(6), 6p.
Abstract
AVC/H.264 supports the use of multiple reference frames (e. g., 5 frames in AVC/H.264) for motion estimation (ME), which demands a huge computational complexity in ME. We propose an adaptive search range adjustment scheme to reduce the computational complexity of ME by reducing the search range of each reference frame-from the (t-1)'th frame to the (t-5)'th frame-for each macroblock. Based on the statistical analysis that the 16x16 mode type is dominantly selected rather than the other block partition mode types, the proposed method reduces the search range of the remaining ME process in the given reference frame according to the motion vector (MV) position of the 16x16 block ME. In the case of the (t-1)'th frame, the MV position of the 8x8 block ME-in addition to that of 16x16 block ME-is also used for the search range reduction to sub-block partition mode types of the 8x8 block. The experimental results show that the proposed method reduces about 50% and 65% of the total encoding time over CIF/SIF and full HD test sequences, respectively, without any noticeable visual degradation, compared to the full search method of the AVC/H.264 encoder. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3589292]
URI
https://www.spiedigitallibrary.org/journals/Optical-Engineering/volume-50/issue-6/067402/Adaptive-search-range-adjustment-scheme-for-fast-motion-estimation-in/10.1117/1.3589292.short
ISSN
0091-3286
DOI
10.1117/1.3589292
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > COMPUTER SCIENCE(컴퓨터소프트웨어학부) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE