DocumentCode :
2954316
Title :
Adaptively Switching Between Directional Interpolation and Region Matching for Spatial Error Concealment Based on DCT Coefficients
Author :
Chen, Yan ; Au, Oscar ; Zhou, Jiantao ; Ho, Chi-Wang
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon
fYear :
2006
fDate :
9-12 July 2006
Firstpage :
805
Lastpage :
808
Abstract :
In this paper, a novel spatial error concealment algorithm, which adaptively switches between directional interpolation and region matching, is proposed. Different from the previous spatial error concealment methods, which just utilize smooth property, the algorithm exploits both smooth property and texture information to recover the lost blocks. Based on the DCT coefficients in the available neighboring MBs, the algorithm automatically analyzes whether the MB is "smooth-like" or "texture-like" and adaptively select directional interpolation or region matching to recover the lost MB. The proposed algorithm has been evaluated on H.264 reference software JM 9.0. The experimental results demonstrate that the proposed method can achieve better PSNR performance and visual quality, compared with weighted pixel average (WPA) which is adopted in H.264, directional interpolation-only and region matching-only
Keywords :
discrete cosine transforms; image matching; image texture; interpolation; DCT coefficient; H.264 reference software JM 9.0; directional interpolation; discrete cosine transforms; region matching; smooth property; spatial error concealment; texture information; Algorithm design and analysis; Computer errors; Decoding; Discrete cosine transforms; Error correction; Forward error correction; Interpolation; PSNR; Software algorithms; Switches;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Multimedia and Expo, 2006 IEEE International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
1-4244-0366-7
Electronic_ISBN :
1-4244-0367-7
Type :
conf
DOI :
10.1109/ICME.2006.262623
Filename :
4036722
Link To Document :
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