ETRI-Knowledge Sharing Plaform

KOREAN
논문 검색
Type SCI
Year ~ Keyword

Detail

Journal Article Efficient MPEG-4 to H.264/AVC Transcoding with Spatial Downscaling
Cited 5 time in scopus Download 29 time Share share facebook twitter linkedin kakaostory
Authors
Toan Dinh Nguyen, Guee-Sang Lee, June-Young Chang, Han-Jin Cho
Issue Date
2007-12
Citation
ETRI Journal, v.29, no.6, pp.826-828
ISSN
1225-6463
Publisher
한국전자통신연구원 (ETRI)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.4218/etrij.07.0207.0090
Abstract
Efficient downscaling in a transcoder is important when the output should be converted to a lower resolution video. In this letter, we suggest an efficient algorithm for transcoding from MPEG-4 SP (with simple profile) to H.264/AVC with spatial downscaling. First, target image blocks are classified into monotonous, complex, and very complex regions for fast mode decision. Second, adaptive search ranges are applied to these image classes for fast motion estimation in an H.264/AVC encoder with predicted motion vectors. Simulation results show that our transcoder considerably reduces transcoding time while video quality is kept almost optimal.
KSP Keywords
Adaptive Search, Efficient algorithms, Fast Mode Decision, Fast motion estimation, H.264/AVC encoder, Motion Vector(MV), Motion estimation(ME), Mpeg-4, Video quality, simulation results, spatial downscaling