Postprocessing of late cells for packet video

Author

Ghanbari, Mohammad

Author_Institution

Dept. of Electron. Syst. Eng., Essex Univ., Colchester, UK

Volume

6

Issue

6

fYear

1996

fDate

12/1/1996 12:00:00 AM

Firstpage

669

Lastpage

678

Abstract

A method for preventing accumulation of image artifacts due to cell loss in packet video is presented. At each ATM switching node an auxiliary buffer is used to store the overflow traffic of the main switching buffer. The main buffer is served with an absolute priority over the auxiliary buffer. Decoded pictures are normally reconstructed from the cells of the main buffer. The late cells received from the auxiliary buffer are processed and properly added to the current decoded picture. Postprocessing of these cells for the standard video codecs such as H.261 and MPEG is presented. It is shown that although the picture quality due to cell loss is temporarily degraded, it is immediately brought back to its original quality upon the reception of the late cells, as if no loss has occurred

Keywords

asynchronous transfer mode; buffer storage; code standards; image reconstruction; packet switching; telecommunication standards; video codecs; video coding; ATM switching node; H.261; MPEG; auxiliary buffer; cell loss; image artifacts; late cells postprocessing; main switching buffer; overflow traffic storage; packet video; picture quality; picture reconstruction; standard video codecs; Asynchronous transfer mode; Buffer storage; Code standards; Decoding; Degradation; Image reconstruction; Protection; Streaming media; Video codecs; Virtual colonoscopy;

fLanguage

English

Journal_Title

Circuits and Systems for Video Technology, IEEE Transactions on

Publisher

ieee

ISSN

1051-8215

Type

jour

DOI

10.1109/76.544738

Filename

544738