New insights and results on transform domain VQ of images

  • Authors:

  • Weiping Li;Ya-Qin Zhang

  • Affiliations:

  • EECS Department, Lehigh University, Bethlehem, PA;System Technology Lab., GTE Laboratories Inc., Waltham, MA

  • Venue:
  • ICASSP'93 Proceedings of the 1993 IEEE international conference on Acoustics, speech, and signal processing: image and multidimensional signal processing - Volume V
  • Year:
  • 1993

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Abstract

Many transform domain VQ schemes have been studied for image coding. Recently, vector transform coding of images has been proposed. A natural question is whether there is a fundamental difference between the idea of vector transform coding and the well known transform/VQ schemes. To answer this question, a unified framework for studying transform domain VQ is developed. Based on such a framework, some new insights are obtained and a new image coding technique is proposed. This study indicates that there is indeed a fundamental difference between vector transform coding and the existing transform/VQ schemes. The results of this study may also have a broader implication for developing other VQ-based two-step image coding techniques.