Frame-Bufferless Sum-Rate Constrained Video Encoding Using Feedback

We investigate the design of a frame-bufferless and low-latency video communication system, where the encoder has no access to any previous frames and only one use of feedback communication from the decoder to the encoder is allowed in encoding each frame. This strict requirement of encoder complexity and system latency is of critical importance in designing low complexity realtime video communication systems where the encoder is limited in storage and computing resources and the use of the feedback channel must not incur accumulated receiver playback delay. We propose a simple online statistical model that captures the time-varying video process and develop a general framework that explores how to best utilize the feedback and distributed source coding mechanisms to minimize the overall communication rate. Our analysis and experimental results validate the efficiency of the proposed system and highlight its potential in practical system design.

1. Ermin Kozica, Hao Zhang and Kannan Ramchandran, “Frame-Bufferless Sum-Rate Constrained Video Encoding Using Feedback,” IEEE International Conference on Image Processing (ICIP) 2010. (Best Student Paper Award Finalist.)

Multimedia transmission and networking

Multimedia networking

1. R. Puri and K. Ramchandran. PRISM: a new robust video coding architecture based on distributed compression principles. Proc. of Allerton Conference on Communication, Control, and Computing, Urbana-Champaign, IL, Oct. 2002

2. Chou PA, Ramchandran K. Clustering source/channel rate allocations for receiver-driven multicast under a limited number of streams. 2000 IEEE International Conference on Multimedia and Expo. ICME2000. Proceedings. Latest Advances in the Fast Changing World of Multimedia. IEEE. Part vol.3, 2000, pp.1221-4 vol.3.

3. Puri R, Kang-Won Lee, Ramchandran K, Bharghavan V. An integrated source transcoding and congestion control paradigm for video streaming in the Internet. IEEE Transactions on Multimedia, vol.3, no.1, March 2001, pp.18-32. .

4. Puri R, Ramchandran K, Lee KW, Bharghavan V. Forward error correction (FEC) codes based multiple description coding for Internet video streaming and multicast. Signal Processing: Image Communication, vol.16, no.8, May 2001, pp.745-62.

5. Majumdar A, Sachs DG, Kozintsev IV, Ramchandran K, Yeung MM. Multicast and unicast real-time video streaming over wireless LANs. IEEE Transactions on Circuits & Systems for Video Technology, vol.12, no.6, June 2002, pp.524-34.

6. Majumdar A, Puri R, Ramchandran K, Kozintsev I. Robust video multicast under rate and channel variability with applications to wireless LANs. 2002 IEEE International Symposium on Circuits and Systems. Proceedings. IEEE. Part vol.1, 2002, pp.I-49-52 vol.1.

7. A. Majumdar, R. Puri, and K. Ramchandran. Distributed multimedia transmission from multiple servers. Proc. of International Conference on Image Processing, Rochester, NY, September 2002.

8. X.Yang and K. Ramchandran. Optimal network proxy caching for image-rich contents. SPIE-Int. Soc. Opt. Eng. Proceedings of Spie - the International Society for Optical Engineering, vol.3969, 2000, pp.224-31.

Multimedia transmission

1. S. S. Pradhan and K. Ramchandran. Enhancing analog image transmission systems using digital side information: a new wavelet based image coding paradigm. IEEE Proceedings of the Data Compression Conference, Snowbird, Utah, March 2001.

2. Kozintsev I, Ramchandran K. On the transmission of a class of hidden Markov sources over Gaussian channels with applications to image communication. Proceedings 2000 International Conference on Image Processing. IEEE. Part vol.1, 2000, pp.363-6 vol.1.

3. Puri R, Ramchandran K. Multiple description source coding using forward error correction codes. Conference Record of the Thirty-Third Asilomar Conference on Signals, Systems, and Computers. IEEE. Part vol.1, 1999, pp.342-6 vol.1.

4. Appadwedula S, Goel M, Shanbhag NR, Jones DL, Ramchandran K. Total system energy minimization for wireless image transmission. Journal of VLSI Signal Processing, vol.27, no.1-2, Feb. 2001, pp.99-117. Kluwer Academic Publishers, Netherlands.

5. I. Kozintsev and K. Ramchandran. Robust image transmission over energy-constrained time-varying channels using multi-resolution joint source-channel coding. IEEE Transactions on Signal Processing:Special Issue on Wavelets and Filter Banks, April 1998.

6. K. Ramchandran, A. Ortega, K. M. Uz, and M. Vetterli. Multiresolution broadcast for digital HDTV using joint source-channel coding. IEEE Journal on Selected Areas in Communications, Special Issue on HDTV and Digital Video Communications, vol. 11, no. 1, pp. 6-23, January 1993.