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Quality improvement scheme of magnified image by using gradient information between adjacent pixel values

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2012, 17(2), pp.59-67
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

Soo-Mok Jung 1

1삼육대학교

Accredited

ABSTRACT

In this paper, an efficient interpolation scheme using gradient information between adjacent pixel values was proposed to estimate the value of interpolated pixel to have the locality which exists in real image and the characteristic of simple convex surface and simple concave surface which exist partially in the real image. PSNR(Peak Signal to Noise Ratio) was used to evaluate the performance of the proposed scheme. The PSNR values of the magnified images using the proposed scheme are greater than those of the magnified images using the previous interpolation schemes.

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