New predictive classified vector quantisation scheme for image compression

Kwok Tung Lo, W. K. Cham

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)


A new image coding method using predictive classified vector quantisation (PCVQ) is proposed. The image is first divided into different subsources using a two-stage classification method based on the optimum three-level block truncation coding technique. Each subsource is then vector quantised using different codebooks. Simulation results show that an improvement of about 2 to 6dB in PSNR performance over the JPEG scheme is obtained at the rate of 0.4375bit/pixel.
Original languageEnglish
Pages (from-to)1280-1282
Number of pages3
JournalElectronics Letters
Issue number16
Publication statusPublished - 4 Aug 1994


  • Data compression
  • Image processing
  • Vector quantisation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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