Title :
A drift compensation architecture for DCT-pyramid video coding
Author :
Atta, R. ; Ghanbari, M.
Author_Institution :
Dept. of Electron. Syst. Eng., Essex Univ., Colchester, UK
Abstract :
A new-layered video coding scheme is proposed for efficient spatial scalability based on the DCT pyramid. The proposed scheme is introduced to eliminate the drift error associated with reduced resolution video. A new algorithm to predict the motion vector of the reduced resolution video from the higher resolution motion vectors is presented. Based on simulation results, the proposed scheme achieves better coding efficiency and lower complexity than H.263+ spatial scalability.
Keywords :
adaptive estimation; computational complexity; discrete cosine transforms; image resolution; motion compensation; motion estimation; video coding; DCT pyramid; H.263+; adaptive motion estimation; discrete cosine transforms; drift compensation architecture; motion compensation; motion vector prediction; reduced resolution video; spatial scalability; video coding; Bandwidth; Bit rate; Decoding; Discrete cosine transforms; Frequency; Motion compensation; Scalability; Spatial resolution; Video coding; Video compression;
Conference_Titel :
Video/Image Processing and Multimedia Communications 4th EURASIP-IEEE Region 8 International Symposium on VIPromCom
Print_ISBN :
953-7044-01-7
DOI :
10.1109/VIPROM.2002.1026675
