Image coding by fitting RBF-surfaces to subimages

  • Authors:
  • Hwang-Soo Kim;Jae-Young Lee

  • Affiliations:
  • Department of Computer Science, Kyungpook National University, 1370 Sankyuk-dong, Puk-ku, Taegu 702-701, South Korea;Mirae Corporation, SoftForum Co. Ltd., 33 Yoido, Yongdungpo, Seoul 150-010, South Korea

  • Venue:
  • Pattern Recognition Letters
  • Year:
  • 2002

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Abstract

In this paper, an image compression method based on a novel idea of surface fitting is proposed. An image is divided into sub-images using a quad tree according to the complexity of the image surface, which is a three-dimensional surface when the pixel values are considered as heights (z-values) defined on the x-y plane. Sub-image surfaces are approximated using a radial-basis function network (RBFN), and the parameters of the RBFN are stored as compressed image representation. This method has comparable performance and quality to the JPEG image compression technique.