Image Coding By Vector Quantization In A Transformed Domain

C. Labit; J. P . Marescq

doi:10.1117/12.952202

1 May 1986 Image Coding By Vector Quantization In A Transformed Domain

C. Labit, J. P . Marescq

Proceedings Volume 0594, Image Coding; (1986) https://doi.org/10.1117/12.952202
Event: 1985 International Technical Symposium/Europe, 1985, Cannes, France

Abstract

Using vector quantization in a transformed domain, TV images are coded. The method exploit spatial redundancies of small 4x4 blocks of pixel : first, a DCT (or Hadamard) trans-form is performed on these blocks. A classification algorithm ranks them into visual and transform properties-based classes. For each class, high energy carrying coefficients are retained and using vector quantization, a codebook is built for the AC remaining part of the transformed blocks. The whole of the codeworks are referenced by an index. Each block is then coded by specifying its DC coefficient and associated index.

Citation Download Citation

C. Labit and J. P . Marescq "Image Coding By Vector Quantization In A Transformed Domain", Proc. SPIE 0594, Image Coding, (1 May 1986); https://doi.org/10.1117/12.952202

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