Motion estimation and compensation for CIF/SIF video sequences

Author

Cuvelier, L. ; Vandendorpe, L.

Author_Institution

Lab. de Telecommun. et Teledetection, Univ. Catholique de Louvain, Belgium

fYear

1996

Firstpage

21

Lastpage

24

Abstract

The non-uniform sampling theory states that any analogue signal whose spectrum is limited to 1/T can be exactly recovered from 2 sequences of samples taken at a rate 1/T and having a different sampling phase. This paper addresses the problem of motion estimation and compensation of CIF/SIF sequences when aliasing is still existing within the frames. This is the case when the method promoted by MPEG 4 is used to obtain CIF/SIF sequences from CCIR 601 original sequences. The motion estimation is performed by using the two previous frames instead of only one previous frame. Interpolation formulas are derived from the non-uniform sampling theory and simulation results are furnished

Keywords

image sampling; image sequences; interpolation; motion compensation; motion estimation; video coding; CCIR 601 original sequences; CIF/SIF video sequences; MPEG 4; analogue signal spectrum; interpolation formulas; motion compensation; motion estimation; nonuniform sampling theory; sampling phase; sampling rate; simulation results; video coding; Digital filters; Digital signal processing; Equations; Interpolation; Karhunen-Loeve transforms; MPEG 4 Standard; Motion estimation; Sampling methods; Video sequences;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Signal Processing Workshop Proceedings, 1996., IEEE

Conference_Location

Loen

Print_ISBN

0-7803-3629-1

Type

conf

DOI

10.1109/DSPWS.1996.555450

Filename

555450