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Statistical characterization and block-based modeling of motion-adaptive coded video

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5 Author(s)
B. Jabbari ; Dept. of Electr. Eng., George Mason Univ., Fairfax, VA, USA ; F. Yegenoglu ; Y. Kou ; S. Zafar
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The statistical characteristics of full-motion video sources using motion-adaptive variable-bit-rate coding techniques is studied. Analytical models are developed to describe the behavior of the coded video signals based on the encoder structure. The video-compression algorithm used is in compliance with the general MPEG syntax and bit-stream definition. Statistical characteristics associated with each block type and their aggregate are presented. A composite model to represent the number of bits per field for the encoded video traffic that comprises multiple autoregressive models for the number of blocks per field and the number of bits in each coded block is derived. The statistics measured from a sample video sequence are compared to those obtained by the model and it is observed that the model captures the coded video behavior for each block type and their combination reasonably well. This model can be used to further study the cell-generation process of full-motion video codecs and the aggregation of such video sources at the statistical multiplexers

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IEEE Transactions on Circuits and Systems for Video Technology  (Volume:3 ,  Issue: 3 )