A fuzzy image metric with application to fractal coding

  • Authors:
  • Junli Li;Gang Chen;Zheru Chi

  • Affiliations:
  • Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., Kowloon;-;-

  • Venue:
  • IEEE Transactions on Image Processing
  • Year:
  • 2002

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Abstract

Image quality assessment is an important issue addressed in various image processing applications such as image/video compression and image reconstruction. The peak signal-to-noise ratio (PSNR) with the L2-metric is commonly used in objective image quality assessment. However, the measure does not agree very well with the human visual perception in many cases. A fuzzy image metric (FIM) is defined based on Sugeno's (1977) fuzzy integral. This new objective image metric, which is to some extent a proper evaluation from the viewpoint of the judgment procedure, is closely approximates the subjective mean opinion score (MOS) with a correlation coefficient of about 0.94, as compared to 0.82 obtained using the PSNR. Compared to the L2-metric, we demonstrate that a better performance can be achieved in fractal coding by using the proposed FIM