Image coder based on residue number system for progressive transmission

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Image coder based on residue number system for progressive transmission

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A computationally efficient algorithm for image compression and progressive transmission is presented. A prime-factor discrete cosine transform (DCT) is applied, where the coefficients are computed in three groups and are residue represented by a different bit allocation. A novel lattice vector quantiser is used for the quantisation of each group.

Inspec keywords: image coding; vector quantisation; residue number systems; discrete cosine transforms

Other keywords: prime-factor DCT; residue number system; discrete cosine transform; computationally efficient algorithm; lattice vector quantiser; image compression; image coder; bit allocation; RNS coder; progressive transmission

Subjects: Integral transforms; Digital arithmetic methods; Computer vision and image processing techniques; Integral transforms; Codes; Pattern recognition; Information theory; Optical information, image and video signal processing

References

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      • T. Fischer . A pyramid vector quantizer. IEEE Trans. , 568 - 583
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      • Y. Huang , H.M. Driezen , N.P. Galatsanos . Prioritized DCT for compression and progressive transmission of images. IEEE Trans. , 477 - 487
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      • Vetterli, M.: `Fast 2-D discrete cosine transform', IEEE ICASSP'85, 1985, p. 1538–1541.
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