Polyphase implementation of a video scalar

@article{Ramaswamy1997PolyphaseIO,
  title={Polyphase implementation of a video scalar},
  author={Arun Ramaswamy and Yousef W. Nijim and Wasfy B. Mikhael},
  journal={Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136)},
  year={1997},
  volume={2},
  pages={1691-1694 vol.2}
}
Image scaling is important in the conversion between different formats such as NTSC, PAL, HDTV and between the CCIR 601 video resolution to the various sizes included in MPEG coding. The change of the resolution proves specially beneficial for improving the coding efficiency. The scaling operation can be generalized by decimation by a factor of M followed by filtering and then interpolation by a factor of L where M and L are integers. The choice of the digital filter depends on the values of L… CONTINUE READING

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