D. Taubman

Publications (2)0 Total impact

• Conference Proceeding: LR-PET Optimization Strategy for Protection of Scalable Video with Unreliable Acknowledgement

  M. Durigon, D. Taubman
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  ABSTRACT: The priority encoding transmission (PET) framework may be leveraged to exploit both unequal error protection and limited retransmission, for RD optimized delivery of streaming media. The resulting paradigm, known as LR-PET, has been shown to offer significant advantages over a variety of other approaches. This paper extends the existing LR-PET framework to allow for unreliable acknowledgement, providing both an efficient policy for retransmission, as well as an efficient optimization algorithm. The extension is non-obvious, yet retains the complexity benefits of LR-PET. Experimental results confirm that the extended LR-PET procedure also retains the protection benefits of LR-PET with the expected dependence on the acknowledgement probability
  Image Processing, 2006 IEEE International Conference on; 11/2006
• Source

  Available from: edu.cn

  Conference Proceeding: Spatially Continuous Orientation Adaptive Discrete Packet Wavelet Decomposition for Image Compression

  N. Mehrseresht, D. Taubman
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  ABSTRACT: In this paper, we propose an orientation adaptive discrete wavelet transform (DWT) with perfect reconstruction. The proposed transform utilizes the lifting structure to effectively orient the 2D-DWT bases in the direction of local image features. A shifting operator is employed within each lifting step to align spatial geometric features along the vertical or horizontal directions. The proposed oriented transform generates a scalable representation for the image and the orientation information. To approximate the asymptotically optimal rate-distortion performance of a piecewise regular function more closely, we adopt a packet wavelet decomposition. The experimental results obtained by implementing the proposed transform in a JPEG2000 codec illustrate superior compression performance for the oriented transform with more than 2.5 dB improvement for highly oriented natural images. More importantly, even at the same PSNR, the proposed scheme reduces the visual appearance of the Gibbs-like artifacts significantly, considerably improving the visual quality of the reconstructed image
  Image Processing, 2006 IEEE International Conference on; 11/2006