Authors:
Jun Wang
;
Lei Wang
;
Takeshi Ikenaga
and
Satoshi Goto
Affiliation:
Graduate School of Information, Production and Systems, Waseda University, Japan
Keyword(s):
Spatial Error Concealment, Adaptive, H.264/AVC.
Related
Ontology
Subjects/Areas/Topics:
Error Control and Concealment
;
Multimedia
;
Multimedia and Communications
;
Telecommunications
Abstract:
Transmission of compressed video over error prone channels may result in packet losses or errors, which can significantly degrade the image quality. Therefore an error concealment scheme is applied at the video receiver side to mask the damaged video. Considering there are 3 types of MBs (Macro Blocks) in natural video frame, i.e., Textural MB, Edged MB, and Smooth MB, this paper proposes an adaptive spatial error concealment which can choose 3 different methods for these 3 different MBs. For criteria of choosing appropriate method, 2 factors are taken into consideration. Firstly, standard deviation of our proposed edge statistical model is exploited. Secondly, some new features of latest video compression standard H.264/AVC, i.e., intra prediction mode is also considered for criterion formulation. Compared with previous works, which are only based on deterministic measurement, proposed method achieves the best image recovery. Subjective and objective image quality evaluations in exp
eriments confirmed this.
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