A butterfly structured design of the hybrid transform coding scheme

@article{Han2013ABS,
  title={A butterfly structured design of the hybrid transform coding scheme},
  author={Jingning Han and Yaowu Xu and Debargha Mukherjee},
  journal={2013 Picture Coding Symposium (PCS)},
  year={2013},
  pages={17-20}
}
The hybrid transform coding scheme that alternates amongst the asymmetric discrete sine transform (ADST) and the discrete cosine transform (DCT) depending on the boundary prediction conditions, is an efficient tool for video and image compression. It optimally exploits the statistical characteristics of prediction residual, thereby achieving significant coding performance gains over the conventional DCT-based approach. A practical concern lies in the intrinsic conflict between transform kernels… CONTINUE READING

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