Hierarchical mean-residual image vector quantiser using gradient-Laplacian subspace distortion

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Pages (from-to)1362-1364
Journal / PublicationElectronics Letters
Issue number17
Publication statusPublished - 1 Jan 1990


A new hierarchical mean-residual image vector quantiser (HMRIVQ) using a general 4-dimensional gradient-Laplacian subspace distortion (GLSD) is proposed. With the use of the GLSD the computational and storage costs of the encoder are significantly reduced. The HMRIVQ can also achieve a very high compression rate for low detailed images.