Publications

THESIS

Yi Liang, "Robust Low-Latency Voice and Video Communication over Best-Effort Networks," August 2003.

pdf oral defense

PATENTS

Y. J. Liang and B. Girod, "Adaptive Playout Scheduling for Multimedia Communication," U.S. patent pending, 10/383,215, February 2003.

Y. J. Liang and J. Apostolopoulos, "Video Communication Converting Burst Losses to Isolated Losses," U.S. patent pending, 10/623,013, October 2002.

Y. J. Liang and K. El-Maleh, "Methods and apparatus for performing fast mode decisions in video codecs," U.S. patent pending, Sept. 2004.

Y. J. Liang and S. Molley, "Mode selection for DCT-domain intra prediction in the spatial domain," U.S. patent pending, October 2004.

Y. J. Liang, K. El-Maleh and S. Manjunath, "Low-complexity channel and content-adaptive Intra-refresh for robust video transmission," U.S. patent pending, Sept. 2004.

Y. J. Liang and S. Manjunath, "Post-Filtering for Hybrid-Coded Video Using Adapted In-Loop Deblocking Filter ," U.S. patent pending, May 2005.

Y. J. Liang and K. El-Maleh, "Adaptive Frame Skipping for Rate-Controlled Video Coding," U.S. patent pending, May 2005.

H. Wang, K. El-Maleh and Y. J. Liang, "A low-complexity content-adaptive background skipping scheme for region-of-interest based wireless video communications," U.S. patent pending, May 2005.

S. King, S. Jalil and Y. J. Liang, "A low bandwidth method apparatus for blending multiple layers in a mobile display processor (MDP)," U.S. patent pending, Feb. 2006.

Y. J. Liang, K. El-Maleh and K. Lai, "High-Resolution Spatial-Variant Interpolation for Generalized FIR Filters and its Applications in Color Image and Video Upscaling," U.S. patent pending, May 2006.

MEDIA MENTION

Douglas Heingartner, "Tools to Help You Listen", New York Times - Technology, Oct. 2, 2003.

Faculty Profile: Bernd Girod, "Research Getting Internet Video Ready for Prime Time," Stanford Today in Engineering, Spring 2006. pdf

PAPERS

Voice over IP

Y. J. Liang, N. Färber, and B. Girod, "Adaptive playout scheduling and loss concealment for voice communication over IP networks," IEEE Transactions on Multimedia, vol. 5, no. 4, pp. 532 - 543, Dec. 2003. (Best Paper Award, IEEE Communications Society Technical Committee on Multimedia Communications, 2007) abstract pdf ps

Y. J. Liang, N. Färber, and B. Girod, "Adaptive playout scheduling using time-scale modification in packet voice communications," Proceedings IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP-2001, vol. 3, pp. 1445-1448, Salt Lake City, UT, May 2001. abstract pdf ps

Low-Latency Video Communication

Y. J. Liang and B. Girod, "Network-Adaptive Low-Latency Video Communicationover Best-Effort Networks," IEEE Transactions on Circuits and Systems for Video Technology, vol. 16, no. 1, pp. 72-81, January 2006. abstract pdf

Y. J. Liang, M. Flierl, and B. Girod, "Low-Latency Video Transmission over Lossy Packet Networks Using Rate-Distortion Optimized Reference Picture Selection," Proceedings IEEE International Conference on Image Processing, vol. 2, pp. 181 -184, Rochester, NY, Sept. 2002. abstract pdf ps

B. Girod, M. Kalman, Y. J. Liang, and R. Zhang, "Advances in Channel-Adaptive Video Streaming," invited paper, Proceedings IEEE International Conference on Image Processing, vol. 1, pp. 9 -12, Rochester, NY, Sept. 2002. abstract pdf

Y. J. Liang and B. Girod, "Low-latency Streaming of Pre-Encoded Video Using Channel-Adaptive Bitstream Assembly," Proceedings IEEE International Conference on Multimedia and Expo, vol. 1, pp. 873-876, Lausanne, Switzerland, Aug. 2002. abstract pdf ps

B. Girod, M. Kalman, Y. J. Liang, and R. Zhang, "Advances in Channel-Adaptive Video Streaming," Journal of Wireless Communication and Mobile Computing, vol. 2, no. 6, pp. 573-84, Sept. 2002. abstract pdf

B. Girod, J. Chakareski, M. Kalman, Y. J. Liang, E. Setton, and R. Zhang, "Advances in Network-adaptive Video Streaming," invited paper, Proceedings of 2002 Tyrrhenian International Workshop on Digital Communications (IWDC 2002), Capri, Italy, Sept. 2002. abstract pdf

Y. J. Liang and B. Girod, "Prescient R-D Optimized Packet Dependency Management for Low-Latency Video Streaming," Proceedings IEEE International Conference on Image Processing, vol. 2, pp. 659-62, Barcelona, Spain, Sept. 2003. abstract pdf

Packet Path Diversity

Y. J. Liang, E. Setton, and B. Girod, "Network-Adaptive Video Communication Using Packet Path Diversity and Rate-Distortion Optimized Reference Picture Selection," Journal of VLSI Signal Processing Systems for Signal, Image, and Video Technology, vol. 41, no. 3, Nov. 2005.

Y. J. Liang, E. G. Steinbach, and B. Girod, "Real-time Voice Communication over the Internet Using Packet Path Diversity," Proceedings ACM Multimedia 2001, pp. 431-440, Ottawa, Canada, Sept./Oct. 2001. abstract pdf ps html

Y. J. Liang, E. G. Steinbach, and B. Girod, "Multi-stream Voice over IP Using Packet Path Diversity," Proceedings IEEE Fourth Workshop on Multimedia Signal Processing, pp. 555-560, Cannes, France, Oct. 2001. abstract pdf ps

Y. J. Liang, E. Setton, and B. Girod, "Channel-Adaptive Video Streaming Using Packet Path Diversity and Rate-Distortion Optimized Reference Picture Selection," Proceedings IEEE Fifth Workshop on Multimedia Signal Processing, pp. 420-423, St. Thomas, Virgin Island, Dec. 2002. abstract pdf

E. G. Steinbach, Y. J. Liang, and B. Girod, "A Simulation Study of Packet Path Diversity for TCP File Transfer and Media Transport on the Internet," invited paper, Proceedings of 2002 Tyrrhenian International Workshop on Digital Communications (IWDC 2002), Capri, Italy, Sept. 2002. abstract pdf

J. Chakareski, E. Setton, Y. J. Liang, and B. Girod, "Video Streaming with Diversity," invited paper, Proceedings IEEE International Conference on Multimedia and Expo, vol. 1, pp. 9-12, Baltimore, MD, July 2003. abstract pdf

E. Setton, Y. J. Liang and B. Girod, "Adaptive multiple Description Video Streaming over Multiple Channels with Active Probing," Proceedings IEEE International Conference on Multimedia and Expo, vol. 1, pp. 509-12, Baltimore, MD, July 2003. abstract pdf

Loss-Distortion Modeling

Y. J. Liang, John G. Apostolopoulos and B. Girod, "Analysis of Packet Loss for Compressed Video: Does Burst-Length Matter?" in press, to appear in 2007, IEEE Transactions on Circuits and Systems for Video Technology.

Y. J. Liang, John G. Apostolopoulos and B. Girod, "Analysis of Packet Loss for Compressed Video: Does Burst-Length Matter?" Proceedings IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP-2003, vol. 5, pp. 684-7, Hong Kong, Apr. 2003. abstract pdf

Y. J. Liang, John G. Apostolopoulos and B. Girod, "Model-Based Delay-Distortion Optimization for Video Streaming Using Packet Interleaving," invited paper, Proceedings 36th Asilomar Conference on Signals, Systems and Computers, vol. 2, pp. 1315-9, Pacific Grove, CA, Nov. 2002. abstract pdf

Video System and Hardware

Y. J. Liang and K. El-Maleh, "Low-Complexity Intra/Inter Mode-Decision for H.264/AVC Video Coder," Proceedings International Symposium on Intelligent Multimedia, Video and Speech Processing, ISIMP-2004, pp. 53-6, Hong Kong, Oct. 2004. pdf

Y. J. Liang, K. El-Maleh, and S. Manjunath, "Upfront Intra-Refresh Decision for Low-Complexity Wireless Video Telephony," Proceedings IEEE International Symposium on Circuits and Systems, ISCAS-2006, Kos, Greece, May. 2006. pdf

Y. J. Liang, H. Wang, and K. El-Maleh, "Design and Implementation of ROI Video Coding Using Content-Adaptive Background Skipping,"Proceedings IEEE International Symposium on Circuits and Systems, ISCAS-2006, Kos, Greece, May. 2006. pdf

H. Wang, Y. J. Liang, and K. El-Maleh, "Real-time region-of-interest video coding using content-adaptive background skipping with dynamic bit reallocation,"Proceedings IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP-2006, vol. 2, pp. 45-8, Toulouse, France, May. 2006.