DCT-BASED ZEROTREE CODING OF COMPOSITED VIDEOS

In this paper we investigate DCT-based embedded zerotree coding of composited videos for multi-point video conferencing. Zerotree coding is a progressive coding method which encodes a video or image into a bit stream with increasing precision. The embedded property is accomplished that all encodings of the same image or video at lower bit rates are embedded in the beginning of the bit stream for the target bit rate [9]. By using the embedded zerotree coder, quality of the composited videos is improved when compared to a conventional encoder.

[1]  Sanjit K. Mitra,et al.  Image resizing in the compressed domain using subband DCT , 2002, IEEE Trans. Circuits Syst. Video Technol..

[2]  David G. Messerschmitt,et al.  MPEG video compositing in the compressed domain , 1996, 1996 IEEE International Symposium on Circuits and Systems. Circuits and Systems Connecting the World. ISCAS 96.

[3]  Shih-Fu Chang,et al.  Compositing motion-compensated video within the network , 1992, CCRV.

[4]  Boon-Lock Yeo,et al.  A fast DCT domain inverse motion compensation algorithm based on shared information in a macroblock , 1998, Conference Record of Thirty-Second Asilomar Conference on Signals, Systems and Computers (Cat. No.98CH36284).

[5]  Cha-Keon Cheong,et al.  A DCT-based Embedded Image Coder Using Wavelet Structure Of DCT For Very Low Bit Rate Video Codec , 1998, IEEE Transactions on Consumer Electronics.

[6]  Cha-Keon Cheong,et al.  Significance tree image sequence coding with DCT-based pyramid structure , 2000, Proceedings 2000 International Conference on Image Processing (Cat. No.00CH37101).

[7]  Jianmin Jiang,et al.  The spatial relationship of DCT coefficients between a block and its sub-blocks , 2002, IEEE Trans. Signal Process..

[8]  Itu-T.  Video coding for low bitrate communication , 1996 .

[9]  Jerome M. Shapiro,et al.  Embedded image coding using zerotrees of wavelet coefficients , 1993, IEEE Trans. Signal Process..

[10]  Z. Xiong,et al.  A DCT-based embedded image coder , 1996, IEEE Signal Processing Letters.

[11]  Donald M. Monro,et al.  Zerotree coding of DCT coefficients , 1997, Proceedings of International Conference on Image Processing.

[12]  Luis F. Chaparro,et al.  Low Bit Rate Video Coding Using DCT-Based Fast Decimation/Interpolation and Embedded Zerotree Coding , 2007, IEEE Transactions on Circuits and Systems for Video Technology.

[13]  Arnulfo P. Azcarraga,et al.  2D order of self-organizing Kristal maps , 1999, IJCNN'99. International Joint Conference on Neural Networks. Proceedings (Cat. No.99CH36339).

[14]  K. Rijkse,et al.  H.263: video coding for low-bit-rate communication , 1996, IEEE Commun. Mag..

[15]  Shih-Fu Chang,et al.  A new approach to decoding and compositing motion-compensated DCT-based images , 1993, 1993 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[16]  Narendra Ahuja,et al.  A fast scheme for image size change in the compressed domain , 2001, IEEE Trans. Circuits Syst. Video Technol..