NDLI: Simultaneous deblocking and error concealment for decoded visual signal

Content Provider	IEEE Xplore Digital Library
Author	Guangtao Zhai Xiaokang Yang Weisi Lin Wenjun Zhang
Copyright Year	2010
Description	Author affiliation: Insti. of Image Commu. & Infor. Proce., Shanghai Jiao Tong University, Shanghai, China, 200240 (Guangtao Zhai; Xiaokang Yang; Wenjun Zhang) \|\| School of Computer Engineering, Nanyang Technological University, Singapore, 639798 (Weisi Lin)
Abstract	We propose a unified deblocking/error-concealment algorithm for simultaneously alleviating blockiness and restoring lost blocks. Blockiness and block loss are two of the most frequently encountered artifacts for block-DCT based visual signal coding and transmission. The problem of error-concealment and deblocking is formulated as block-wise expectation estimation processes conditioned on available pixels in a local neighborhood. A nonparametric kernel regression approach is used for approximating the conditional probability and thus the conditional expectation of each image block. Missing blocks are restored and blockiness are suppressed with a single pass of the algorithm. The algorithm is highly efficient in that only block-wise additions and multiplications in pixel domain within a local neighborhood are involved. Experimental results are provided to justify the effectiveness of the proposed unified error-concealment/deblocking algorithm.
Starting Page	2626
Ending Page	2629
File Size	898609
Page Count	4
File Format	PDF
ISBN	9781424453085
DOI	10.1109/ISCAS.2010.5537080
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-30
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decoding Kernel Computer errors Pixel Image restoration Signal restoration Propagation losses Filters Image coding Multicast algorithms
Content Type	Text
Resource Type	Article

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