Encoding edge blocks by partial blocks of codevectors in vector quantisation

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Encoding edge blocks by partial blocks of codevectors in vector quantisation

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A natural approach in vector quantisation to treat an edge block as two partial blocks and encode them with the partial blocks of the codevectors is proposed. This puts more bits on the edge blocks to improve their quality and only one codebook is used.

Inspec keywords: image coding; vector quantisation

Other keywords: codevectors; image compression; VQ; edge blocks encoding; vector quantisation; partial blocks

Subjects: Image and video coding; Codes; Signal processing theory; Computer vision and image processing techniques

References

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      • Y. Linde , A. Buzo , R.M. Gray . An algorithm for vector quantizer design. IEEE Trans. Commun. , 1 , 84 - 95
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      • C.C. Wang , C.H. Chen , I.H. Chen . Modified VQ-BTC algorithm for imagecompression. Electron. Lett. , 14 , 1390 - 1392
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      • B. Ramamurthi , A. Gersho . Classified vector quantization of images. IEEE Trans. Commun. , 11 , 1105 - 1115
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      • S.A. Mohamed , M.M. Fahmy . Image compression using VQ-BTC. IEEE Trans. Commun. , 7 , 2177 - 2182
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