Backward tracking of B-pictures bidirectional motion for interframeconcealment of anchor pictures
Shanableh, T.
Ghanbari, M.
Essex Univ., Colchester;
This paper appears in: Image Processing, 2000. Proceedings. 2000 International Conference on
Publication Date: 2000
Volume: 3,
On page(s): 396-399 vol.3
Meeting Date: 09/10/2000 - 09/13/2000
Location: Vancouver, BC, Canada
ISBN: 0-7803-6297-7
References Cited: 8
INSPEC Accession Number: 7005379
Digital Object Identifier: 10.1109/ICIP.2000.899417
Current Version Published: 2002-08-06
Abstract
A novel interframe error concealment technique is proposed for
video packet losses in IP environments. The proposed technique benefits
from the bidirectional motion parameters of bidirectionally predicted
pictures `B-pictures' to conceal large portions (up to 100%) of
corrupted anchor pictures. The lost anchor picture is interframe
concealed by backward tracking its motion to its anchor picture through
the intermediate bidirectional motion of B-pictures. Furthermore, we
show that by constraining the motion compensation of the B-pictures to
strengthen the tie between their bidirectional motion and that of the
future anchor pictures, better concealment of the latter is achieved.
The paper then elaborates on the impact of the proposed
constrained-encoding in terms of encoding efficiency and concealment
quality
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