Generalizations of the Image Resolution Conversions in DCT-Domain using 8 points inversed DCT

1 Citations
  • KOJIMA Kazuhiro
    Department of Electrical Eng., Graduate School of Eng., Tokyo Metropolitan Univ.
  • KIYA Hitoshi
    Department of Electrical Eng., Graduate School of Eng., Tokyo Metropolitan Univ.

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Other Title
  • 8点逆DCTを用いるDCT領域における画像解像度変換法の一般化

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Description

Image resolution conversion is a process of converting an image with a given number of pixels into another one with different number of pixels. In this work, we consider proposed DCT-domain resolution conversion methods, which are used in image minification or magnification. These methods can be classified into two types. In the methods of one type, resolution conversions need more process on the decoder because a size of inversed DCT differs from that of DCT. The methods of the other type, using inversed DCT whose size is equal to that of DCT, have realizable utilities. In this work, we give the time-domain equivalent representations of the latter methods. Furthermore, we extend the methods to the generalized forms which can perform the resolution conversions directly in DCT-domain.

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Details 詳細情報について

  • CRID
    1573105977275832192
  • NII Article ID
    110003279837
  • NII Book ID
    AN10060786
  • ISSN
    09135685
  • Text Lang
    ja
  • Data Source
    • CiNii Articles

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