Estimation of aliasing error in layered coding system

Author

Iwahashi, Masahiro ; Ohyama, Koichi ; Kambayashi, Noriyoshi

Author_Institution

Dept. of Electr. Eng., Nagaoka Univ. of Technol., Niigata, Japan

Volume

v

fYear

1994

fDate

19-22 Apr 1994

Abstract

This paper theoretically investigates data distortion caused by resolution conversion in DCT (discrete cosine transform) based layered coding system. The system is attractive because it can not only compress large amounts of video data but also convert the scale of reconstructed pictures. However only a few attempts have so far been made at the degree of aliasing error. In this paper we treat the DCT system as a filter bank so that we can evaluate the system in the frequency domain. As a result of our study the system is theoretically evaluated from the multirate stand point and the DCT system is compared with other layered coding systems, e.g. subband coding and Gaussian/Laplacian pyramid, by means of one objective measure

Keywords

all-pass filters; data compression; discrete cosine transforms; error statistics; frequency-domain analysis; image reconstruction; low-pass filters; video coding; DCT; Gaussian/Laplacian pyramid; aliasing error estimation; data distortion; filter bank; frequency domain; layered coding system; multirate system; objective measure; reconstructed pictures; resolution conversion; subband coding; video data; Decoding; Discrete cosine transforms; Estimation error; Filter bank; Frequency; Image coding; Image converters; Paints; Signal synthesis; Video compression;

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.1994.389416

Filename

389416