A study on rate control method for MP@HL encoder with parallel encoder architecture using picture partitioning

Author

Nog, Satoshi

Author_Institution

C&C Media Res. Labs., NEC Corp., Kawasaki, Japan

Volume

4

fYear

1999

fDate

1999

Firstpage

261

Abstract

This paper proposes rate control methods for parallel encoder architecture using picture partitioning, which is often used for MPEG-2 VIDEO Main Profile @ High Level (MP@HL) encoders. Partitioning boundaries are sometimes visible in decoded pictures because of control discontinuity. An adaptive bitrate allocation scheme is proposed to reduce the discontinuity of picture quality around partitioning boundaries. Quantizer scale (Qscale) restriction in rate control is also proposed for further improvement. Computer simulation results show that both optimum bitrate allocation and discontinuity reduction around the partitioning boundaries are achieved with the proposed methods

Keywords

digital simulation; encoding; high definition television; parallel architectures; video coding; MP@HL encoder; Qscale; adaptive bitrate allocation scheme; computer simulation; control discontinuity; optimum bitrate allocation; parallel encoder architecture; partitioning boundaries; picture partitioning; picture quality; quantizer scale restriction; rate control method; Bit rate; Circuits; Clocks; Codecs; Computer simulation; Encoding; HDTV; Laboratories; National electric code; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 1999. ICIP 99. Proceedings. 1999 International Conference on

Conference_Location

Kobe

Print_ISBN

0-7803-5467-2

Type

conf

DOI

10.1109/ICIP.1999.819591

Filename

819591