MPEG encoding algorithm with scene adaptive dynamic GOP structure

Although a GOP (group of picture) length is often fixed in MPEG, this may not guarantee the best picture quality from the point of view of coding efficiency. Furthermore, it is also well known that P-picture interval M=3 does not provide the best quality for all sequences. We propose an MPEG encoding algorithm with scene adaptive dynamic GOP structure to enhance the picture quality in the cases mentioned above. Using macroblock characteristics such as luminance activity and simple motion compensation on the activity domain, N and M values are dynamically determined.

[1]  Jian Zhou,et al.  A fast effective scene change detection and adaptive rate control algorithm , 1998, Proceedings 1998 International Conference on Image Processing. ICIP98 (Cat. No.98CB36269).

[2]  Luís Teixeira.  Analysis of a Two Step MPEG Video System , 1997, ICIAP.

[3]  Arun N. Netravali,et al.  Digital Video: An introduction to MPEG-2 , 1996 .

[4]  Soon-kak Kwon,et al.  A Scene Adaptive Bitrate Control Method In Mpeg Video Coding , 1997 .

[5]  Soon-kak Kwon,et al.  Scene adaptive bit-rate control method on MPEG video coding , 1997, Electronic Imaging.

[6]  Reginald L. Lagendijk,et al.  Scene adaptive rate control in a distributed parallel MPEG video encoder , 1997, Proceedings of International Conference on Image Processing.

[7]  Bo Tao,et al.  A rate-quantization model for MPEG encoders , 1997, Proceedings of International Conference on Image Processing.

[8]  Lijun Luo,et al.  A new algorithm on MPEG-2 target bit-number allocation at scene changes , 1997, IEEE Trans. Circuits Syst. Video Technol..

[9]  Lijun Luo,et al.  An adaptive quantization algorithm for MPEG-2 video coding , 1998, Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98 (Cat. No.98CH36181).

[10]  Chwan-Hwa Wu,et al.  Augmenting STM5 bit rate control scheme for improving coding quality of MPEG2 video encoders , 1997, Proceedings of 1997 IEEE International Symposium on Circuits and Systems. Circuits and Systems in the Information Age ISCAS '97.