A study on rate distortion optimization scheme for JVT coder
Koichi Takagi, Yasuhiro Takishima, Yasuyuki Nakajima · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2003
This paper focuses on the encoder of ITU-T H.264 | ISO/IEC MPEG-4 Part-10 AVC (hereafter “JVT”), especially the Lagrange parameter for the rate distortion optimization (RDO) scheme. Since the Lagrange optimization method is very effective from the viewpoint of coding efficiency optimization, it is specified as an essential experimental condition for performance evaluation in JVT standardization activity. After discussing the background of this mechanism, we verify this method and the currently used parameter theoretically. Computer simulation results show that the Lagrange multiplier might not necessarily be original value; smaller values provide better performance in QCIF, for example.