Title :
Interframe video coding using overlapped motion compensation and perfect reconstruction filter banks
Author :
Jozawa, Hirohisa ; Watanabe, Hiroshi ; Singhal, Sharad
Author_Institution :
NTT Human Interface Labs., Yokosuka, Japan
Abstract :
Interframe video coders using the discrete cosine transform (DCT) and motion compensation (MC) produce block artifacts in the decoded video at low bit-rates. Results on lapped orthogonal transforms (LOTs) suggest that they can reduce these artifacts. However, LOTs are difficult to use efficiently with motion compensation because of block overlap. The authors propose a new video coding algorithm that forms a natural connection between LOTs and motion compensation using two novel concepts: overlapped motion compensation (OMC) and overlapped macroblocks using frequency domain coefficients
Keywords :
filtering and prediction theory; frequency-domain analysis; image coding; motion estimation; transforms; video signals; frequency domain coefficients; interframe video coding; overlapped macroblocks; overlapped motion compensation; perfect reconstruction filter banks; video coding algorithm; Channel bank filters; Discrete cosine transforms; Discrete transforms; Filtering; ISO standards; Karhunen-Loeve transforms; Maximum likelihood detection; Motion compensation; Nonlinear filters; Video coding;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0532-9
DOI :
10.1109/ICASSP.1992.226314
