Extending RD-OPT with global thresholding for JPEG optimization

V. Ratnakar; M. Livny

DOI:10.1109/DCC.1996.488343

Corpus ID: 11074392

Extending RD-OPT with global thresholding for JPEG optimization

@article{Ratnakar1996ExtendingRW,
  title={Extending RD-OPT with global thresholding for JPEG optimization},
  author={V. Ratnakar and M. Livny},
  journal={Proceedings of Data Compression Conference - DCC '96},
  year={1996},
  pages={379-386}
}

V. Ratnakar, M. Livny

Published 1996

Mathematics, Computer Science

Proceedings of Data Compression Conference - DCC '96

In this paper, the RD-OPT algorithm for optimizing discrete cosine transform quantization tables [Ratnakar and Livny, 1995] is extended to incorporate global thresholding. Performance gains are possible by zeroing off some DCT coefficients in DCT-based image compression. We describe a global thresholding scheme, in which the zeroing thresholds for coefficients can be arbitrarily different from those determined by the quantization table. Unlike local thresholding [Crouse and Ramchandran, 1995… CONTINUE READING

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