Fast DCT domain filtering using the DCT and the DST

@article{Keshet1999FastDD,
  title={Fast DCT domain filtering using the DCT and the DST},
  author={Renato Keshet and Neri Merhav},
  journal={IEEE transactions on image processing : a publication of the IEEE Signal Processing Society},
  year={1999},
  volume={8 6},
  pages={821-33}
}
A method for efficient spatial domain filtering, directly in the discrete cosine transform (DCT) domain, is developed and proposed. It consists of using the discrete sine transform (DST) and the DCT for transform-domain processing on the in JPEG basis of the previously derived convolution-multiplication properties of discrete trigonometric transforms. The proposed scheme requires neither zero padding of the input data nor kernel symmetry. It is demonstrated that, in typical applications, the… CONTINUE READING
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