DocumentCode
864971
Title
Using inter-frame dependence history to select intra-refresh blocks
Author
Zhao, C. ; Ngan, K.N. ; Zhang, J. ; Mathew, R. ; Zhang, X.
Author_Institution
Sch. of Comput. Eng., Nanyang Technol. Univ., Singapore
Volume
38
Issue
22
fYear
2002
fDate
10/24/2002 12:00:00 AM
Firstpage
1337
Lastpage
1338
Abstract
To prevent error propagation in predictive video coding, intra-refresh methods are often employed. Here, a new algorithm for macroblock intra-refresh that is based on pixel level inter-frame dependence history is proposed. This new method keeps track of the coding mode of every pixel and refreshes those macroblocks that contain pixels with a long history record. Simulation results show that the new algorithm performs better than the existing methods while maintaining the same bit rate.
Keywords
video coding; H.263; MPEG-4; error propagation problem; inter-frame dependence history; intra-refresh blocks selection; macroblock intra-refresh; predictive video coding;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20020924
Filename
1047082
Link To Document