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

Volume

4

fYear

1992

fDate

23-26 Mar 1992

Firstpage

649

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on

Conference_Location

San Francisco, CA

ISSN

1520-6149

Print_ISBN

0-7803-0532-9

Type

conf

DOI

10.1109/ICASSP.1992.226314

Filename

226314