Variable block visual pattern image coding

  • Authors:

  • Ping Su;A. G. Constantinides

  • Affiliations:

  • Department of Electrical Engineering, Imperial College of Science Technology and Medicine, London, United Kingdom;Department of Electrical Engineering, Imperial College of Science Technology and Medicine, London, United Kingdom

  • 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

In this presentation a variable block visual pattern image coding scheme is proposed. It offers high-fidelity images, high compression ratio(29.50:1) and extremely low complexity. A set of visual patterns was designed by applying spatial constraints and considering their visual importance. A subset of the patterns may be chosen for an application. A block of pixels can be represented by either a uniform pattern or one of the edge patterns. A weighted block gradient is introduced as a criterion to judge whether an image block is roughly uniform or contains a visible edge. Image coding is simplified to coding of the pattern index and one or two related parameters.