Difference between revisions of "CompressionGroup/MCProject"

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<P><B>Multi-view Video Coding</B></P>
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<P><B>Multimedia Compression</B></P>
  
 
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Multiview video systems are used for capturing a scene from different viewpoints, so that 3-D information of a scene is contained in the resulting set of sequences. Such videos are emerging as a potential tool for new multimedia services, e.g., 3-D TV and free viewpoint video. Because a multiview video contains several video sequences from different cameras, widespread use of multiview video requires the design of efficient compression techniques.
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Our current research projects include:
 
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  <li> 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.
  
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  <li> 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.
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A straightforward approach for multiview video encoding would be to use standard video coding techniques independently on the video sequences corresponding to each camera. To further improve coding efficiency, inter-view coding (IVC) can be applied, where block-based predictive techniques can be used that is similar to the motion compensated predictive coding techniques used in MPEG-2, H.264/AVC, etc. Please refer to [http://biron.usc.edu/~jaekim/MVC/mvcDiagram.jpg MVC diagram]
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Revision as of 02:10, 22 September 2005

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.
      PDF format
    • 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.
      PDF format
    • 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.
      PDF format
    • Huisheng Wang, Ngai-Man Cheung and Antonio Ortega, "WZS: Wyner-Ziv Scalable Predictive Video Coding", Picture Coding Symposium (PCS) 2004 , Dec. 2004.
      PDF format
    • Huisheng Wang and Antonio Ortega, "Scalable Predictive Coding by Nested Quantization with Layered Side Information", IEEE International Conference on Image Processing (ICIP) , 2004.
      PDF format
    • 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.
      PDF format


  • People




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