Digital video standards conversion in the presence of accelerated motion

Author

Patti, Andrew J. ; Sezan, M. Ibrahim ; Tekalp, A. Murat

Author_Institution

Dept. of Electr. Eng., Rochester Univ., NY, USA

Volume

v

fYear

1994

fDate

19-22 Apr 1994

Abstract

We address the standards conversion of digital video containing accelerated motion. The spectral characterization of such video is performed by means of short time spectral analysis. The support of the Short Time Spectrum (STS) of video with accelerated motion is derived, and is compared to the STS of linear time-varying (LTV) filters that operate along an accelerated motion trajectory. By utilizing the multiplication property of the STS, it is shown that filtering along the accelerated motion trajectory potentially yields the smallest amount of aliasing in standards conversion applications

Keywords

digital signals; filtering theory; motion estimation; spectral analysis; telecommunication standards; television standards; time-varying filters; video signal processing; accelerated motion; accelerated motion trajectory; aliasing; digital video standards conversion; filtering; linear time-varying filters; multiplication property; short time spectral analysis; short time spectrum; spectral characteristics; Acceleration; Fourier transforms; High definition video; Image reconstruction; Lattices; Low pass filters; Nonlinear filters; Sampling methods; Sociotechnical systems; Spectral analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on

Conference_Location

Adelaide, SA

ISSN

1520-6149

Print_ISBN

0-7803-1775-0

Type

conf

DOI

10.1109/ICASSP.1994.389491

Filename

389491