CompressionGroup/MCProject

Multimedia Compression

Our current research projects include:

• Multimedia Communication: We proposed a new coding scheme, Multiple Description Layered Coding (MDLC), which combines the advantages of layered coding (LC) and multiple description coding (MDC) to provide reliable video communication over a wider range of network scenarios and application requirements. A runtime scheduling algorithm is also developed for the MDLC system, to reduce its redundancy to match the channel behavior. The MDLC system is implemented by adding enhancement to the original MPEG-4 FGS.
• Distributed Source Coding: Based on the distributed source coding framework, we proposed efficient scalable video coding and hyperspectral image compression systems. Using distributed source coding tools, encoder can operate in 'open loop' leading to complexity reduction. We also proposed efficient methods to estimate the correlation function to facilitate encoding.

• Publications
  • Huisheng Wang, Ngai-Man Cheung and Antonio Ortega, "A Framework for Adaptive Scalable Video Coding Using Wyner-Ziv Techniques," Accepted in EURASIP Journal on Applied Signal Processing , 2005.
    
  • Ngai-Man Cheung, Caimu Tang, Antonio Ortega and Cauligi S. Raghavendra, "Efficient Wavelet-based Predictive Slepian-Wolf Coding for Hyperspectral Imagery," Submitted to EURASIP Journal on Signal Processing , 2005.
    
  • Ngai-Man Cheung, Huisheng Wang and Antonio Ortega, "Correlation Estimation for Distributed Source Coding under Information Exchange Constraints," IEEE International Conference on Image Processing (ICIP) , 2005.
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  • Caimu Tang, Ngai-Man Cheung, Antonio Ortega and Cauligi S. Raghavendra, "Efficient Inter-band Prediction and Wavelet Based Compression for Hyperspectral Imagery: A Distributed Source Coding Approach," IEEE Data Compression Conference (DCC) , 2005.
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  • Huisheng Wang and Antonio Ortega, "Rate-Distortion Based Scheduling of Video with Multiple Decoding Paths", Image and Video Communications and Processing 2005 Conf., EI'2005 , Jan. 2005.
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  • Huisheng Wang, Ngai-Man Cheung and Antonio Ortega, "WZS: Wyner-Ziv Scalable Predictive Video Coding", Picture Coding Symposium (PCS) 2004 , Dec. 2004.
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  • Huisheng Wang and Antonio Ortega, "Scalable Predictive Coding by Nested Quantization with Layered Side Information", IEEE International Conference on Image Processing (ICIP) , 2004.
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  • Huisheng Wang and Antonio Ortega, "Robust Video Communication by Combining Scalability and Multiple Description Coding Techniques", Image and Video Communications and Processing 2003 Conf., EI'2003 , Jan. 2003.
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• People
  • Antonio Ortega
  • Huisheng Wang
  • Ngai-Man Cheung

  
  

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